US2075627A - Sandbag support - Google Patents

Description

Patented Mar. 30, 1937 PATENT OFFICE SAN DBAG SUPPORT Harry Schlesinger, Des Moines, Iowa, assignor of one-half to Alfred F. Yoerg, Des Moines, Iowa Application November 18, 1935, Serial No. 50,400

9 Claims.

An object of my present invention is to provide a sand bag structure for pressing hat brims, the structure being comparatively simple, and inexpensive from a manufacturing standpoint.

A further object is to provide a sand bag structure in which the heavy sand bag is raised by a spring or the like, the bag being lowered manually by a handle provided for that purpose and latched in the lowered position.

A further object is to provide a latch which, although there is a tendency for it to remain in latched position caused by friction produced by the means which raises the sand bag, can be readily released and to provide in connection with the latching means for the sand bag, a hydraulic check means so that the sand bag will not slam upwardly, thus producing excessive Wear and a possibility of breaking parts of the device.

A further object is to provide a hydraulic check means so as to eliminate the necessity for the operator to hold the sand bag from moving upwardly too quickly.

A further object is to provide a device of the kind described in which a supporting post encloses a spring which ciounterbalances and raises the sand bag when the latch is released, a cylinder and plunger assembly being provided within the post and the post constituting a reservoir for oil for the cylinder and plunger, these parts forming a hydraulic check for the movement of the sand bag upwardly.

A further object is to provide in the hydraulic check, a check valve operable to permit quick entrance of oil to the cylinder when lowering the sand bag manually and a vent for permitting restricted fiow only of oil out of the cylinder when the latch is released and the spring within the post raises the sand bag.

With these and other objects in View my in- 40 vention consists in the construction, arrangement and combination of the various parts of my device, whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in my claims and illustrated in the accompanying drawing, in which:

Figure 1 is a side elevation of a sand bag support embodying my invention.

Figure 2 is an enlarged sectional view on the line 2-2 of Figure 1 showing the post and internal details thereof.

Figure 3 is a sectional view on the line 3--3 of Figure 1 showing on an enlarged scale the latch lug and a latch pin latched together,

Figure 4 is a sectional view on the line 4--4 (if-Figure 3; and

Figure 5 is a view similar to Figure 4 showing the parts nearly latched.

I have used the reference numeral I0 on the accompanying drawing to indicate a base. The base i0 is forked to straddle a hat supporting block l2 and is provided with an upstanding boss M at one side thereof. The boss I4 is tubular and receives the lower endfof a tubular post I6. The post 16 is held therein by a set screw [8. The post is shouldered at 20 (see Figure 2) to limit its position with respect to the boss.

A collar 22 surrounds the post l6 and serves as a rest for a boss 24 of a supporting arm 26 of disc shape. The arm 26 has a boss 28 opposite the boss 24. A sand bag supporting shaft 30 is Vertically slidable in'the boss 28. On the lower end of the shaft 30 I provide a'spider 32 for sup porting a sand bag casing 34. The bottom of the casing 34 is closed by a plurality of fire proof fabric covers 36 on top of which an electric heating element 38 is mounted. The space within the casing 34 above the cover 36 is filled with sand 40 in the usual manner.

The cover 36 is adapted for contacting with the brim 42 of a hat 44, which brim rests on a ring 46 of the proper size to fit the hat, the brim. of which is being pressed. When the sand bag is in the lowered position, the weight of the sand causes equal conformation of the cover 36 to the hat brim throughout the entire area thereof.

A hub-like member 48 is secured as by a clamping bolt 50 to the shaft 38. This member is provided with a slot 52 receiving a pin 54-of an operating lever 56. The lever 56 is pivoted to the arm 26 at 58 and has a manipulating handle 60.

Opposite the handle 60 the end of the lever 56 is connected by a link 62 with a rod 64. The rod 64 extends slidably through a head 66 of the boss 24 and into the post l6. Its lower end is slidable in and guided by a cylinder 68. The rod constitutes a plunger in the cylinder.

I provide a spring 10 of sufficient strength to counterbalance the weight of the sand bag and raise it. The lower end of the spring is an.- chored to afiange l2 abutting against a shoulder M of the post l6. The upper end is anchored to a collar 16 secured as by a pin 18 to the rod 64.

The cylinder 68 is held stationary'relative to the post 5 by a fitting screwed into the lower end of the post below a suitable gasket 82. The fitting B0 is provided with a slot 84 for receiving a tool to screw'the fitting into the post.

Within the fitting 80 a valve seat 86 is provided on which isnormallyseated a ball valve-88. A

strainer screen 90 isprovided interposedbetween the fitting and the space within the post I 6 which space constitutes a reservoir for oil 92. Passageways 94 and 96 are provided in the flange I2 and the fitting 80 respectively, for permitting flow of oil. The fitting 80 is also provided with a vent 98, the purpose of which will hereinafter appear.

position of Figure 4 by a spring H2. A suitable,

stop may be provided to limit the clockwise rotation of the latch pin I06. In Figure 1 I show a stop pin I I4 for this purpose.

Practical operation In the operation of my sand bag support, the plunger 64 normally assumes the position shown by full lines in Figure 2 and the handle 60 is raised. When it is desired to use the sand bag to press a hat brim, the handle 60 is grasped and pulled downwardly, thereby lowering the sand bag and stretching the spring 70. The latch extension I00 will first assume the dotted position shown in Figure 5 and then upon further downward movement the incline I02 will rotate the latch pin I 06 against the action of the spring I I2 to the full line position and finally when the notch I ll lregisters with the latch pin as shown in Figure 4 the spring IIZ will swing the latch pin back to the position shown in Figure 4. The sand bag is now securely latched in position.

When it is desired to raise the sand bag to its upper position, it is merely necessary to swing the bell crank H0 counter-clockwise so that the bottom of the notch I03 will swing to a substantially vertical position, which releases the extension I00 and permits the spring 10 to contract. The operation of swinging the latch pin I06 from the position of Figure 4 to the position of Figure 5 is comparatively easy because the circumference of the pin I 06, which constitutes a latching surface, is naturally on a radius from the pivotal axis of the pin. The spring, however, will not contract quickly because it must force the oil out of the cylinder 68 through the vent 98 which is quite small and therefore permits the sand bag to move up slowly instead of quickly and eliminates the necessity of the operator having to retain the handle against quick upward movement.

When the handle is moved downwardly, however, the valve 88 lifts off the seat 86 and permits quick entry of the oil 92 to the cylinder 68, which is obviously desirable. The screen 90, aside from keeping dirt out of the check valve, serves to prevent air from being drawn into the cylinder and thus forming air pockets. The post I6 may be provided with an oil filler plug II6 into which oil can be introduced until it reaches the level of the p ug.

Some changes may be made in the construction and arrangement of the parts of my device without departing from the real spirit and purpose of my invention and it is my intention to cover by my claims any modified forms of structure or use of mechanical equivalents which may be reasonably included within their scope.

I claim as my invention:

1. In a sand bag support, a base, a post extending upwardly therefrom, a sand bag, a vertical shaft connected with said sand bag, said post supporting said shaft for sliding movement, a lever pivoted to said post and to said vertical shaft for lowering said sand bag by swinging said lever, a latch for retaining said sand bag in lowered position, a spring within said post and connected with s a id lever for raising said sand bag when said latch is released and hydraulic means within said post to check the movement upwardly of said sand bag.

2. In a sand bag support, a base,a post extending upwardly therefrom, a sand bag, a vertical shaft connected with said sand bag, said post supporting said shaft for sliding movement, a lever pivoted to said post for lowering said sand bag, a latch for retaining said sand bag in lowered position, a spring within said post and connected with said lever for raising said sand bag when said latch is released and hydraulic means within said post to check the movement upwardly of said sand bag, said post constituting a reservoir for liquid for said hydraulic means.

3. In a sand bag support, a base, a post'extending upwardly therefrom, a sand bag, a vertical shaft connected with said sand bag, said post supporting said shaft for sliding movement, a lever pivoted to said post for lowering said sand bag, a latch for retaining said sand bag in lowered position, a spring within said post and connected with said lever for raising said sand bag when said latch is released and hydraulic means within said post to check the movement upwardly of said sand bag, said hydraulic means comprising a cylinder stationary in said post, a plunger connected with said lever, liquid for said cylinder and plunger, a check valve permitting quick flow of the liquid into said cylinder when lowering said sand bag and a vent for permitting only restricted exit of said liquid from said cylinder upon release of said latch.

4. In a sand bag support, a base, apost extending upwardly therefrom, a sand bag, a vertical shaft connected with said sand bag, said post supporting said shaft for sliding movement, a lever pivoted to said post for lowering said sand bag, a latch for retaining said sand bag in lowered position, a spring within said post and connected with said lever for raising said sand bag whenv said latch is released and hydraulic means within said post to check the movement upwardly of said sand bag, said hydraulic means comprising a cylinder plunger connected with said lever, liquid for said cylinder and plunger, said post constituting a reservoir for such liquid, a check valve permitting quick fiow of the liquid into said cylinder when lowering said sand bag and a vent for permitting only restricted exit of said liquid from said cylinder upon release of said latch.

5. In a sand bag structure, a frame including a hollow post, a sand bag supported for movement relative thereto, means tending to raise said sand bag, a handle provided for manually lowering said sand bag, a latch for retaining said sand bag in lowered position, a piston within said hollow post and operatively connected with said sand bag for movement simultaneously therewith, and fluid within said hollow post to check the movement of said piston and thereby said sand bag to raised position upon release of said latch, and vent means to permit relatively slow passage of said fluid past said piston.

. 6. In a sand bag structure, a sand bag, means tending to raise said sand bag, a handle provided for manually lowering said sand bag, a pivotally mounted latch for retaining said sand bag in lowered position and hydraulic means to check stationary in said post, a

the movement of said sand bag to raised position upon release of said latch, said latch including a latching surface formed on a radius from the pivotal axis of the latch to permit ease of manipulation of said latch against the action of said first means.

7. In a sand bag support, a base, a post extending upwardly therefrom, a sand bag, a vertical shaft connected with said sand bag, said post supporting said shaft for sliding movement, a lever pivoted to said post for lowering said sand bag, a pivotally mounted latch for retaining said sand bag in lowered position, a spring within said post and connected with said lever for raising said sand bag when said latch is released and hydraulic means within said post to check the movement upwardly of said sand bag, said latch including a latching surface formed on a radius from the pivotal axis of the latch to permit ease of manipulation of said latch against the action of said first means.

8. In a sand bag structure, a sand bag, means tending to raise said sand bag, a handle provided for manually lowering said sand bag, a latch for retaining said sand bag in lowered position and hydraulic means to check the movement of said sand bag to raised position upon release of said latch, said hydraulic means comprising a cylinder and a plunger, liquid for said cylinder and plunger, a check valve permitting quick flow of liquid into the cylinder when lowering said sand bag and a vent permitting restricted exit only of liquid from said cylinder upon release of said latch.

9. In a sand bag structure, a sand bag, means tending to raise said sand bag, a handle provided for manually lowering said sand bag, a pivotally mounted latch for retaining said sand bag in lowered position and hydraulic means to check the movement of said sand bag to raised position upon release of said latch, said hydraulic means comprising a cylinder and a plunger, liquid for said cylinder and plunger, 2, check valve permitting quick fiow of liquid into the cylinder when lowering said sand bag and a vent permitting restricted exit only of liquid from said cylinder upon release of said latch, said latch including a latching surface formed on a radius from the pivotal axis of the latch to permit ease of manipulation of said latch against the action of said first means.

HARRY SCHLESINGER.

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