U.S. patent number 3,797,066 [Application Number 05/286,209] was granted by the patent office on 1974-03-19 for shag rug vacuum head.
Invention is credited to Joseph P. Zaidan.
United States Patent |
3,797,066 |
Zaidan |
March 19, 1974 |
SHAG RUG VACUUM HEAD
Abstract
A head for a vacuum shag rug cleaner in which a comb or brush is
mounted in the head on a transverse pivot to swing the comb or
brush from a position upright and projecting from the bottom of the
head to be effective in combing, to a position with the comb or
brush swung to one side with the teeth nearly encompassed in the
head. As the vacuum head is moved across a shag rug the teeth will
comb the shag rug in one direction and will slide thereover when
moved in the opposite direction on the return stroke so that all of
the combing is in a single direction to give the surface of the rug
a uniform appearance. The comb or brush is spring biased to its
upright position and is moved to its non-effective position by
action of movement of the comb across the rug in a direction to
compress the springs therein.
Inventors: |
Zaidan; Joseph P.
(Philadelphia, PA) |
Family
ID: |
23097566 |
Appl.
No.: |
05/286,209 |
Filed: |
September 5, 1972 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
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94235 |
Dec 1, 1970 |
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Current U.S.
Class: |
15/369; 15/402;
15/371 |
Current CPC
Class: |
A47L
9/02 (20130101) |
Current International
Class: |
A47L
9/02 (20060101); A47l 009/06 () |
Field of
Search: |
;15/369,402,368,371 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
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165,488 |
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Feb 1934 |
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CH |
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1,259,032 |
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Jan 1968 |
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DT |
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Primary Examiner: Wilhite; Billy J.
Assistant Examiner: Moore; C. K.
Attorney, Agent or Firm: Blair & Brown
Parent Case Text
CROSS REFERENCE TO RELATED APPLICATION
This application is a continuance-in-part of my copending
application Ser. No. 94235, filed Dec. 1, 1970, entitled "Shag Rug
Vacuum" (now abandoned).
Claims
What is claimed is:
1. A shag rug vacuum cleaning head comprising an elongate housing
having an open bottom, spaced parallel end walls secured in
opposite ends of said housing, a channel bracket pivotally mounted
to each of said end walls within said housing, an elongate
substantially flat rug treating member engageable in said channel
brackets at opposite ends of said member, means on opposite ends of
said member for detachably securing said member in said channel
brackets, said member being adapted for swinging movement with said
brackets in said hood, stop means in said hood for limiting the
swinging movement of said brackets in one direction to an upright
position of said member within said hood, a resilient leaf spring
secured to said member and engaging said housing for normally
urging said member and said brackets into stop means engaging
position of said brackets while permitting said member to swing
away from said stop means on movement of said hood in one direction
and disengageable means on one of said end walls to engage the side
of said bracket opposite said stop means to prevent the movement of
said bracket in a direction opposite to said stop means.
2. A device as claimed in claim 1 wherein the means for securing
said member in said bracket includes spring members secured to
opposite ends of said member and engaging in said brackets to
resiliently secure said member in said brackets.
3. A device as claimed in claim 1 wherein said rug treating member
includes a plurality of rigid teeth secured thereto in depending
relation along the lower edge thereof.
4. A device as claimed in claim 1 wherein said rug treating member
comprises a brush having bristles detachably secured to the lower
edge thereof.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to vacuum cleaning heads for shag rug
cleaning.
2. Summary of the Invention
A cleaning head is provided with a connection for connecting to the
vacuum conduit of a vacuum cleaner. The cleaning head has a
transverse hood within which is releasably secured a comb or brush
spring biased to an upright central position with the brush or comb
extending below the open bottom face of the hood. The comb or brush
is spring biased to its upright position and can swing to the rear
of the hood to an ineffective position with the teeth nearly
completely contained within the hood. The comb or brush is
effective in combing the nap of a shag rug in one direction of the
pass of the head thereover with no combing taking place on the
return pass as the comb or brush swings to one side in the return
pass.
The primary object of the invention is to provide a vacuum head
which will comb a shag rug uniformly in one direction while the
head is passed over the shag rug in two directions.
Other objects and advantages will become apparent in the following
specification when considered in the light of the attached
drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a side elevation of the invention;
FIG. 2 is a bottom plan view of the structure illustrated in FIG.
1;
FIG. 3 is a vertical sectional view, taken along the line 3--3 of
FIG. 1, looking in the direction of the arrows;
FIG. 4 is an enlarged fragmentary transverse sectional view, taken
along the line 4--4 of FIG. 3, looking in the direction of the
arrows;
FIG. 5 is a fragmentary vertical sectional view, taken along the
line 5--5 of FIG. 4, looking in the direction of the arrows;
FIG. 6 is a perspective view of the comb removed from the head;
and
FIG. 7 is a perspective view of a brush used with the invention
shown removed from the head.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now to the drawings in detail, wherein like reference
characters indicate like parts throughout the several figures, the
reference numeral 10 indicates generally a shag rug vacuum cleaning
head constructed in accordance with the invention.
The vacuum cleaning head 10 includes a tubular conduit 11 adapted
to be secured to a vacuum cleaning hose extending from any
conventional vacuum cleaner. The tubular conduit 11 is rigidly
secured centrally of a transversely extending elongate hood 13. The
hood 13 has opposite end walls 14, 15 connected at opposite ends of
a continuous arcuate wall 16 as can be best seen in FIG. 4. The
arcuate wall 16 and the end walls 14, 15 are arranged so as to be
opened at 17 completely across the bottom portion thereof.
A generally U-shaped bracket 18 is mounted in each end of the hood
13 on the end walls 14, 15 respectively by a pivot 19 extending
therethrough. A stop 20 is rigidly secured to each of the end walls
14, 15 in a position to engage the brackets 18 to prevent them from
swinging about their pivots 19 toward the front of the head 10
beyond a position of upright relation midway of the opposite front
and rear sides of the hood 13.
A removable stop 21 is threaded into the end wall 14 when desired
to lock the brackets 18 in upright position if such be desired.
In FIG. 6 a rigid comb 22 is illustrated and is formed of an
elongate flat piece of material having a plurality of sharpened
comb teeth 23 formed along the lower edge thereof. A boss 24
extends upwardly from each end of the comb 22 on the upper side
thereof opposite the teeth 23. A spring member 25 is secured to
each of the bosses 24 by a securing pin 26 as can be seen in FIG.
6. A leaf spring 27 is secured to the comb 22 by a securing element
28 and is positioned intermediate the opposite ends of the comb 22.
The comb 22 is adapted to be inserted in the channel brackets 18 at
opposite ends of the hood 13 with the springs 25 being compressed
slightly as the comb 22 is inserted in the channels 18 so as to
provide frictional securement of the comb 22 in the channel
brackets 18. The leaf spring 27 is adapted to engage against the
rear portion of the continuous wall 16 to urge the comb 22 and the
brackets 18 into an upright position with the brackets 18 against
the stops 20. With the stop 21 removed the comb 22 can by
compressing the leaf spring 27 swing to the rear position shown in
broken lines in FIG. 4 to retract the teeth 23 inwardly of the hood
13.
A brush 32 is illustrated in FIG. 7 as a replacement for the comb
22 under certain conditions. The brush 32 is similarly formed of an
elongate flat piece of material and has a brush 33 secured to its
lower edge by spring securing elements S. Bosses 34 extend upwardly
on opposite ends of the brush 32 and have spring elements 35
secured thereto by securing elements 36. A leaf spring (not shown)
identical to the leaf spring 27 used with the comb 22 is provided
for the brush 32 to permit its use in the same manner as the comb
22.
In the use and operation of the invention the head 10 is moved
across a rug with either the comb 22 or brush 32 attached thereto
and with the stop 21 disconnected. The head 10 is moved in a line
parallel to the axis of the conduit 11 and perpendicular to the
transverse hood 13. As the head 10 is pushed forwardly the comb 22
or brush 32 swings rearwardly so that no combing or brushing action
occurs then as the head 10 is pulled rearwardly the spring 27
pushes the comb 22 or brush 32 into an upright position so that the
rug is combed on the return trip. Since combing only takes place in
one direction while the head is moved in two directions it can be
seen that all of the combing effect on the shag rug will be in the
same direction so as to uniformly comb the rug while moving the
head back and forth across the rug.
Having thus described the preferred embodiment of the invention it
should be understood that numerous structural modifications and
adaptations may be resorted to without departing from the spirit of
the invention.
* * * * *