U.S. patent number 3,857,122 [Application Number 05/432,770] was granted by the patent office on 1974-12-31 for safety toe trip for crib drop sides.
This patent grant is currently assigned to Gem Industries, Inc.. Invention is credited to Robert G. Bryant.
United States Patent |
3,857,122 |
Bryant |
December 31, 1974 |
SAFETY TOE TRIP FOR CRIB DROP SIDES
Abstract
A safety crip drop side having a safety latch held by resilient
means requiring a certain number of pounds of pressure on a foot
pedal to release it. The foot pedal is located at an end of the
crib out of the reach of the occupant and being of a nature which
is not susceptible to accidental operation by an animal, or another
infant.
Inventors: |
Bryant; Robert G. (Gardner,
MA) |
Assignee: |
Gem Industries, Inc. (Gardner,
MA)
|
Family
ID: |
23717518 |
Appl.
No.: |
05/432,770 |
Filed: |
January 11, 1974 |
Current U.S.
Class: |
5/100; 5/11 |
Current CPC
Class: |
A47D
7/02 (20130101) |
Current International
Class: |
A47D
7/02 (20060101); A47D 7/00 (20060101); A47d
009/00 () |
Field of
Search: |
;5/13,11,100,331 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Nunberg; Casmir A.
Attorney, Agent or Firm: Fay; Charles R.
Claims
I claim:
1. A safety latch construction for a crib having a drop side, said
crib including a stabilizer bar,
a movable latch on the stabilizer bar and means to be latched
thereby on the drop side, resilient means associated with said
latch and tending to maintain the same in latching condition with
respect to said means,
and a foot pedal, said foot pedal having an operative connection
with respect to said latch to move it to release said means, and a
second resilient means for said foot pedal tending to maintain the
same in a position wherein the latch is in its latching position,
said second resilient means being isolated fron the latch, wherein
the connection between the movable latch and the pedal comprises an
elongated longitudinally movable bar and a pivoted connection
between the bar and the pedal.
2. The safety latch construction of claim 1 wherein the second
resilient means is relatively strong with respect to the first
named resilient means.
3. The safety latch construction of claim 1 wherein said connection
is slidable, the second named resilient means having no effect on
said bar and therefore no effect on the latch.
4. The safety latch construction of claim 1 wherein said pedal is
located at one end of the stabilizer bar.
5. The safety latch construction of claim 4 wherein said crib
includes a corner post, said pedal being pivotally mounted on said
corner post and extending inwardly thereof with respect to the
crib.
6. The safety latch construction of claim 1 wherein the latch is
pivoted, and a pivot connection between the latch and the bar, the
pivot connection being offset with respect to the pivot for the
latch.
7. The safety latch construction of claim 6 wherein said latch
includes a bight for the reception of the means to be latched on
the drop side.
8. The safety latch construction of claim 1 including a guide on
the stabilizer, means pivoting the latch to the guide, the guide
including a downwardly open V-shaped notch, and said latch having a
cam surface thereon at the lower edge thereof, said means to be
latched upon rising of the drop side engaging said cam edge moving
the latch aside, the first named resilient means causing said latch
to snap in under said means to be latched in the V-notch.
9. A safety latch for a crib having a drop side, said crib
including a pair of corner posts and a stabilizer bar secured
between the two corner posts,
a reciprocal bar on the stabilizer bar, a spring to restrain motion
of the bar in one direction at one end of said bar, a latch pivoted
to the stabilizer bar and to the reciprocal bar on offset axes, the
latch having a bight,
a bell crank at the opposite end of said bar connected with respect
to said bar, a pedal attached to a leg of the bell crank, said
lever being pivotally mounted on one of said corner posts and
effective to draw the bar against the action of the spring when
depressed, through the bell crank,
a gate shoe on the drop side, said gate shoe having means thereon
for engagement and latching by the bight of said latch when the
drop side is raised whereby the drop side is latched in its
uppermost position, depression of said pedal drawing said
reciprocal bar against the action of the spring and moving the
latch to release the gate shoe means and allow the drop side to
descend.
Description
BACKGROUND OF THE INVENTION
Crib drop sides have been made for many years with different kinds
of trip locks which are actuated to allow the crib sides to drop to
a lower location. In the past it has been a consideration not only
to provide for ease of operation of these trip locks but also cost
has been important. Recently however greater safety has become the
prime consideration so that the trip lock will not be accidentally
operated as by an animal or by another infant or even accidentally
by the nurse or mother. One of the suggestions for providing for
such safety is to require a certain amount of pressure to be
utilized before the trip can be actuated, it being believed that a
required pressure of 10 or 11 pounds will prevent operation
accidentally because of the effort involved in operating the latch;
and it is the object of the present invention to provide such a
device with a foot pedal located at one end of the crib only and
having resilient strength applied thereto in the nature required so
that the pedal cannot be operated accidentally.
SUMMARY OF THE INVENTION
A more or less conventional crib has a stabilizer bar which runs
across the front of the crib from one corner post to the other. A
pair of guides are secured thereto and each guide has a pivoted
latch thereon. A rod or bar is connected to a bell crank by a
sliding connection and the bell crank in turn is operated by a
pedal at one end of the crib preferably pivotally mounted on a
corner post. The latches are pivoted to the rod or bar and swing
between latching and releasing positions relative to gate shoes on
the crib drop side. Light resilient means is provided to resist
motion of the rod in one direction, and heavy resilient means
restricts the bell crank against actuation by the pedal, so that
the latches will not release unless the required amount of pressure
is applied to the pedal.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a view in elevation illustrating the rear side of the
stabilizer bar showing the present invention;
FIG. 2 is an enlarged section on line 2--2 in FIG. 1;
FIG. 3 illustrates a gate shoe; and
FIG. 4 shows a detail of the pedal construction.
PREFERRED EMBODIMENT OF THE INVENTION
Referring to FIG. 1 the reference numerals 10 and 12 indicate crib
corner posts at the opposite ends of the crib. A pair of brackets
14, 14 are mounted on the inside facing aspects of these corner
posts and on and between them is riveted an angle iron stabilizer
bar 16. The construction to be described is applied to the inner
aspects of the vertical flange of the angle iron by a pair of
attached flat guides 18, 18 provided with inverted V-notches 20,
20.
A bar 22 is located at the inside aspects of the guides 18, 18 and
a light spring 24 is attached to one end of this bar, the other end
of the spring being attached to the vertical flange of the angle
iron. At the opposite end of the bar 22 there is attached a rod 26
by the simple means of applying a bend or hook to an aperture as at
28. The other end of the rod 26 is similarly applied to a flange 29
on a bell crank 30 by a bend 31 in rod 26. The bell crank 30 is
pivoted to bracket 14 at 32, and arm 34 of the bell crank is
connected to a vertical rod 36 having an inturned end 38 at its
lower end.
The inturned end 38 of rod 36 is entered into the flange 40 of a
pedal 42, the pedal 42 being located in a generally horizontal
relationship and extends inwardly with relation to the corner post
12 as by a pivot 44 and washer 46 as shown in FIG. 3.
The rod 26 can move to the left in FIG. 1, relative to bell crank
30 but it cannot move to the right when the bend 31 abuts the
flange 28. Therefore heavy spring 25 connected to the arm 30 of the
bell crank has no effect on the bar 22 but relatively strongly
resists depression of the pedal 42.
A pair of like latches indicated at 48 and 50 are pivotally mounted
as at 52 and 54 respectively on the respective guides 18. Each hook
is provided with a bight as at 56, 58 and being pivotally mounted
as at 52, 54 in order to latch the rods 60, 62 on a pair of gate
shoes 64, see FIG. 3. Each gate shoe 64 comprises a flat plate
mounted on the lower rail 66 of the drop side and has a bent
portion 68 extending forwardly and having fixed thereto the
respective pin 60 or 62 in position to enter and drop from the
V-shaped notches 20 in the guides 18. The latches are pivotally
connected with respect to bar 22 by bent out flanges 70 rockably
mounted in holes in the bar, and are held assembled by fasteners
72. When the pedal is stepped on and the rod 26 and bar 22
consequently move to the left, the latches swing to the right
releasing the pins 60 and 62 and allowing the crib drop side to
drop.
The light spring 24 acts to move the latches clockwisely to
latching position, and little force is needed to accomplish this
per se; but to move the pedal down to unlatch the latches requires
a greater force, e.g., 18 pounds pull, due to heavy spring 25. When
the drop side is raised, the pins 60, 62 strike cam edges 74 on the
latches and move them counterclockwisely so that the pins are
trapped in the bights 56 and 58, due to the pressure of light
spring 24, which may have about e.g., a 4 pound pull. A flange 78
on each catch stops the clockwise motion of the catches when the
drop side is down.
The heads 61 on the ends of pins 60 and 62 prevent the drop side
from disengaging from the lock and accidentally causing the drop
side to fall.
* * * * *