U.S. patent number 3,763,906 [Application Number 05/194,884] was granted by the patent office on 1973-10-09 for hammer construction.
Invention is credited to Thomas E. Crowder.
United States Patent |
3,763,906 |
Crowder |
October 9, 1973 |
HAMMER CONSTRUCTION
Abstract
A hammer construction including a support member overhanging the
hammer poll and defining a plurality of nail body receiving slots
of different lengths perpendicular to the face of the poll in an
ordered arrangement and a nail head receiving recess at the upper
end of each slot. A head supporting projection overlies each recess
and defines a hooked tip extending over the next adjacent slot
intermediate its ends to assist in retaining a nail in the slot and
the hammer head is magnetized to do the same. The hammer head may
be provided with a V-shaped flange member to receive nail heads
thereunder and remove same. The handle may be equipped with a
measuring device or a leveling device.
Inventors: |
Crowder; Thomas E. (Atlanta,
GA) |
Family
ID: |
22719248 |
Appl.
No.: |
05/194,884 |
Filed: |
November 2, 1971 |
Current U.S.
Class: |
81/24; 7/143;
81/25 |
Current CPC
Class: |
B25D
1/06 (20130101) |
Current International
Class: |
B25D
1/00 (20060101); B25D 1/06 (20060101); B25d
001/04 () |
Field of
Search: |
;7/1F,1M,1Q
;33/333,334,375 ;145/29R,3R,3A,30.5,64 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Jones, Jr.; James L.
Assistant Examiner: Bicks; Mark S.
Claims
I claim:
1. A hammer construction including a head comprising a poll and
nail positioning means for carrying a nail for starting the driving
thereof, said nail positioning means including:
a support defining a plurality of nail body receiving slots
oriented generally parallel to the centerline of said head and a
plurality of nail head receiving recesses, one of said recesses
communicating with each of said slots at that end opposite said
poll and arranged to position a nail carried therein so that its
point extends a prescribed distance beyond the face of said poll;
and,
a plurality of projections carried by said support, one of said
projections overlying each of said recesses opposite said slot,
said head being magnetized to retain a nail in said slots to start
same, said slots being ordered in arrangement from shortest to
longest and arranged so that said projection associated with each
of said slots except said projection of said longest slot extends
over the next adjacent slot, that portion of each said projection
extending over said adjacent slot being undercut to define a hooked
tip on said projection overlying a portion of said adjacent slot to
allow a nail to be inserted in said slot yet be partially retained
by said hooked tip.
2. An adapter constructed and arranged to fit onto the head of a
hammer for carrying a nail during the starting of the driving
thereof, said adapter including:
a body defining an open ended bore therein adapted to receive said
hammer head and a poll in said body;
a plurality of nail body receiving slots defined in said body and
oriented generally parallel to the centerline of said body and a
plurality of nail head receiving recesses, one of said recesses
communicating with each of said slots at that end opposite said
poll and arranged to position a nail carried therein so that its
point extends a prescribed distance beyond the face of said poll;
and,
a plurality of projections carried by said body, one of said
projections overlying each of said recesses opposite said slot,
said body being magnetized to retain a nail in said slots to start
same, said slots being ordered in arrangement from shortest to
longest and arranged so that said projection associated with each
of said slots except said projection of said long slot extends over
the next adjacent slot, that portion of each said projection
extending over said adjacent slot being undercut to define a hooked
tip on said projection overlying a portion of said adjacent slot to
allow a nail to be inserted in said slot yet be partially retained
by said hooked tip.
3. The adapter of claim 2 further including holding means for
releasably maintaining said hammer head in said bore.
4. The adapter of claim 3 for mounting on the head of a hammer
having a poll and defining an abutment behind said head poll
wherein said holding means includes a plurality of resilient
members carried by said body within said bore and constructed and
arranged to engage said abutment to hold said adapter onto said
head; and manually engagable withdrawal members operatively
connected to said resilient members for selectively releasing said
resilient members from engagement with said abutment.
Description
BACKGROUND OF THE INVENTION
Various attempts have been made to facilitate the starting of the
driving of nails and other similar fasteners with a hammer. Various
attachments have been conceived for attachment to or integral with
a standard claw hammer to produce this result, however, such
devices have been difficult to use, did not hold the nails
properly, or had limited versatility when in use.
SUMMARY OF THE INVENTION
These and other problems and disadvantages associated with the
prior art are overcome by the invention disclosed herein by
providing a plurality of different lengths of nail receiving slots
about the head of the hammer substantially parallel to the
centerline of the head and magnetic means for retaining the nails
within the slots until the driving of the nail is started.
Extension means may be provided to increase the effective reach to
drive the nail and nail removal means may be provided to remove the
nail after driving has started if the proper location of the nail
has not been achieved. The slots are of different lengths to
provide for different size nails so that the length of extension of
each size nail past the head of the hammer will be approximately
the same thus facilitating the starting of the nail.
Another embodiment of the invention may be provided as an adapter
having the nail receiving slots therein and which can be
selectively affixed to the head of a conventional hammer to provide
the same nail holding capabilities as the other embodiment.
These and other features and advantages of the invention will
become more apparent upon consideration of the following detailed
description and accompanying drawings wherein like characters of
reference designate corresponding parts throughout the several
views and in which;
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a side elevational view of one embodiment of the
invention;
FIG. 2 is a face view of the embodiment shown in FIG. 1;
FIG. 3 is a front elevational view of the embodiment of FIG. 1;
FIG. 4 is a transverse cross-sectional view taken along 4--4 in
FIG. 1;
FIG. 5 is a longitudinal cross-sectional view taken along line 5--5
in FIG. 2;
FIG. 6 is a side elevational view of a second embodiment of the
invention;
FIG. 7 is a cross-sectional view taken along line 7--7 in FIG.
6;
FIG. 8 is a side elevational view of an adapter embodying the
invention;
FIG. 9 is a cross-sectional view taken along line 9--9 in FIG. 8;
and,
FIG. 10 is a longitudinal cross-sectional view of the invention
incorporating a measuring device; and,
FIG. 11 is a side elevational view of the invention incorporating a
leveling mechanism therein.
These figures and the following detailed description disclose
specific embodiments of the invention, however, it is to be
understood that the inventive concept is not limited thereto since
it may be embodied in other forms.
DETAILED DESCRIPTION OF ILLUSTRATIVE EMBODIMENTS
Referring particularly to FIGS. 1-4, a hammer 10 is illustrated
including a first embodiment of the invention. Hammer 10 includes a
head 11 and handle 12. The head 11 is provided with the usual poll
14, nail removing claws 15 and a main body 16 with eye 18 for
receiving the handle 12. A reduced diameter connector 19 is
integral with the body 16 at its one end and poll 14 at its other
end to position the poll 14 so that its centerline CL-P is
substantially perpendicular to the centerline CL-H of handle 12 as
is conventionally done. This positions the plane of the nail
driving face 20 substantially parallel to the centerline CL-H.
The forward end of head 11 is provided with an arcuate support 17
which is integral with connector 19 and has a thickness such that
it presents an overhanging portion 21 projecting out over the
peripheral surface 22 of poll 14. It will also be noted that
support 17 extends substantially half way around connector 19 and
it is understood that the location around the connector 19 at which
the support 17 is located may be changed as described herein.
The overhanging portion 21 of support 17 defines a plurality of
circumferentially space slots 24 therein which have a generally
semi-circular cross-section and extend parallel to the centerline
CL-P. While four such slots 24 are shown in the figures it is to be
understood that different numbers of slots may be formed as will be
explained. Each slot 24 opens onto that surface of portion 21
adjacent the surface 22 of poll 14 with the slots having different
lengths. The slots 24 are arranged so that their length increases
or decreases as one moves circumferentially about the support 17 as
will become apparent. The diameter of slots 24 are such that the
main body of a different standard size nail N, shown in dashed
lines in FIG. 3, will just fit into that slot 24 which is a
prescribed distance "a" shorter than the length of the nail. Thus,
when the standard nail is positioned in its proper slot 24, it will
project past the driving face 20 of poll 14 a prescribed distance
"b."
A nail head receiving recess 25 is provided at the end of each slot
24 opposite the poll 14 and extends generally transversely of the
axis of slot 14. This recess 25 is dimensioned sufficiently to just
receive the head of nail N when its main body is within slot 24. A
projection 26 extends out over each recess 25 opposite slot 24 and
is dimensioned so that its driving surface 28 covers the head of
the nail in recess 25. The slots 24 are so located that the
projection 26 associated with each recess 25 overlies a portion of
the adjacent slot 24 having a length greater than that associated
with the particular projection 26. That portion of projection 26
overlying a slot 24 is undercut at 29 as best seen in FIG. 4 to
form a continuation of the cross-sectional shape of the particular
slot 24. Thus, a hook shaped tip 30 extends partially over the
intermediate slots 24 to assist in retaining the particular nail N
in its proper slot 24. The tip 30 is so dimensioned to allow the
nail to be inserted in slot 24 yet helps retain it therein once it
is in place. Because the centrifugal force generated as the hammer
10 is swung tends to force the nail N directly outwardly along a
path parallel to the centerline CL-H of the handle 12, the
overhanging tip 30 is effective to retain the nail. This is
especially true if the slots 24 are located in that area of the
poll 14 from the front to the back when moving counterclockwise as
seen in FIG. 2.
The entire head 11 is magnetized so that once a nail N has been
placed in its proper slot 24, it will be forcibly retained therein.
The head 11 may be magnetized by winding a wire therearound and
momentarily connecting same to a direct current source such as an
automobile battery.
In use, the nail N to be driven is selected and inserted into the
proper slot 24 with its head in recess 25. This causes the tip of
the nail to project the prescribed distance "b" beyond the face 20
of poll 14. The handle 12 is then grasped and struck one blow in
conventional manner to start the driving of the nail. The tip 30
and magnetic forces in head 11 prevent the nail from being ejected
from the slot 24 before it is started. The magnetic force in head
11 is not so great as to prevent release of the nail from slot 24
once it is started to allow the completion of the driving of the
nail in conventional manner by striking the head of the nail with
the face 20 of poll 14. As indicated earlier, the slots 24 may be
located anywhere about the poll 14 as long as their ordered
arrangement is maintained.
As best seen in FIGS. 1 and 2, the outboard end of the handle 12 is
provided with a pair of passages 34 which are perpendicular to each
other and to the centerline CL-H of handle 12. One passage 34 is
parallel to the centerline CL-P of head 11 and the other is
perpendicular thereto. By inserting an appropriately sized nail
through one of the passages 34 and holding the hammer 10 adjacent a
wall in which it is desirable to locate the studs therein so that
the centerline CL-H of handle 12 is approximately parallel to the
surface of the wall and the face 20 of poll 14 or the side of head
11 is closely adjacent but not touching the wall, the magnetic
forces in head 11 will attract any ferr-magnetic material in the
wall (usually a nail in a stud or a metal stud) and cause the head
11 to swing into alignment with the stud to locate same.
SECOND EMBODIMENT
Referring particularly to FIGS. 6 and 7, the second embodiment of
the invention is embodied in a hammer 100 with a head 101 and a
handle 102. The head 101 includes a poll 104 with a driving surface
105 and a peripheral edge 106. The main body 108 of head 101 is
larger in diameter than poll 104 and concentrically located with
respect thereto to provide an overhanging portion 109 similar to
portion 21 of hammer 10.
A plurality of slots 110, recesses 111 and projections 112 are
provided on body 108 corresponding in location and use with slots
24, recesses 25 and projections 26 of the hammer 10. Also, the head
101 is magnetized similar to head 11 of hammer 10. Thus, it will be
seen that hammer 100 can be used to start nails in the same manner
as hammer 10.
Instead of claws as provided on hammer 10, hammer 100 is provided
with a nail pulling unit 114. Unit 114 can be used to pull nails
that have just been started with the hammer 100 if they are
improperly located as will be apparent. Unit 114 is a V-shaped
member 115 integral with and extending tangentially back from body
108 toward handle 102. Member 115 has a pair of diverging flanges
116 defining a V-shaped opening 118 therebetween and a nail head
receiving cavity 119 under the flanges. Thus, to remove a nail on
which driving has just started, the unit 114 is manipulated until
the nail head is received within cavity 119 under flanges 116. The
hammer 100 is then pulled so that flanges 116 dislodge the nail
from the material in which it is started.
The handle 102 is extendable and includes a plurality of
interlocking sections 120. Fasteners 121 or locking rings 122 may
be provided to hold sections 120 together. Thus, virtually
unlimited reach can be provided with hammer 100.
THIRD EMBODIMENT
Referring to FIGS. 8 and 9, a third embodiment of the invention is
incorporated in an adapter 200 for use on a standard hammer H
having a poll P carried by a reduced diameter shank S.
Adapter 200 has a cylindrical body 201 with a cylindrical bore 202
therein just large enough to slidably receive the poll P of a
standard hammer therein through its upper open end 204 as seen in
FIG. 9. The bottom of bore 202 is closed to provide a driving
surface 205 to be engaged by the face F of poll P. A pair of
diametrically opposed recesses 206 are provided in body 201 along
bore 212 in which leaf springs 208 are attached adjacent the upper
end of bore 212. The lower ends 209 of springs 208 are resiliently
urged out of recesses 206 into bore 202. The length of springs 208
is such that when the poll P is fully seated against surface 205,
the ends 209 of the springs will project out over poll P at its
juncture with shank S to lock the adapter 200 on hammer H.
Withdrawing pins 210 are connected to the backside of ends 209 and
extend out of body 201 through holes 211. This allows pins 210 to
be grasped and ends 209 to be withdrawn from bore 202 for removal
of adapter 200 from hammer H. Since the major force applied to
adapter 200 is encountered when starting and driving a nail as is
apparent, the strength of springs 208 need not be great.
The body 201 is provided with a poll 214 forward of the poll P in
bore 212. Poll 214 is slightly smaller in diameter than body 201 to
form an overhanging portion 215 corresponding to portion 21 in
hammer 10.
Slots 216, recesses 218 and projections 219 are provided which
correspond in location and use to slots 24, recesses 25 and
projections 26 of hammer 10. The body 201 is magnetized similarly
to the head 11 of hammer 10 to start nails.
MEASURING DEVICE
FIG. 10 shows hammer 10 with its handle 12 equipped with an
inside-outside measuring device 50. The device 50 includes a
calibrated member 51 which is slidably received in a longitudinally
extending passageway 52 in handle 12. The protruding end of member
51 is provided with an abutment 54, the forward end 55 of which
engages the rear end 56 of handle 12. A leaf spring tensioning
device 58 is carried in passageway 52 and retained by notches 59.
The device 58 resiliently engages one edge of member 51 to
frictionally retain it in selected position.
The top edge of member 51 as seen in FIG. 10 is calibrated for
outside measuring as indicated by indicia 60. Thus, when the
outside of an object is to be measured, the forward edge 55 of
abutment 54 is placed on one side of the object and the rear edge
56 of handle 12 is abutted against the opposite side of the object.
The correct measurement is then indicated by the indicia 60 in
alignment with the rear edge 56 of handle 12.
Because it is frequently desirable to measure the inside distance
between objects such as studs in walls, the bottom edge of member
51 is calibrated for inside measuring as indicated by indicia 70.
The indicia 70 takes into account the length of handle 12 and head
11 as well as the abutment 54 so that when the forward edge of head
11 is placed against one object and the rear edge 71 of abutment 54
is placed against the other object, the indicia 70 aligned with the
rear end 56 of handle 12 will indicate the total distance between
the objects.
LEVELING DEVICE
Referring now to FIG. 11, the hammer 10 is shown with its handle 12
equipped with a leveling device 75. Device 75 has a first unit 76
constructed and arranged to indicate when the straight line L
joining the outermost point P-1 of poll 14 with the outermost point
P-2 of handle 12 is vertical. Device 75 also has a second unit 78
constructed and arranged to indicate when line L is horizontal.
Each unit 76 and 78 is carried in a hole 79 through handle 12 and
includes a slightly curved fluid tube 80 filled with liquid and
having an air bubble therein.
While specific embodiments of the invention have been disclosed
herein, it is to be understood that full use may be made of
modifications, substitutions, and equivalents without departing
from the scope of the inventive concept.
* * * * *