US1981680A

US1981680A - Hoisting table

Info

Publication number: US1981680A
Application number: US723886A
Authority: US
Inventors: Richard J Tindale
Original assignee: Individual
Current assignee: Individual
Priority date: 1934-05-04
Filing date: 1934-05-04
Publication date: 1934-11-20
Anticipated expiration: 1951-11-20

Description

Nv. 20, 1934. R. J. 'rlNDALE l,981,6v80

HOI STING TABLE Filed May 4. 1934 easily moved from one position to another. When to be stored. i

Patented Nov. 20, 1934 'I v v v1,98'1 ,68o

UNITED sTATEs P'ixrlzti'vl'A oFFlcEv` Hors'rING TABLE Richard' J. Tindale, Denver, Colo. Application May 4, 1984. serial Nb. .728,886 I 1 olaim" (C1. 254-6) i This invention relates to improvements in hoisting vtables and has reference morel particularly to attablethevtoprof which can be raised and lowered by means of a suitable hoisting device.

In stores of different types goods are kept on shelves along the walls and when the goods are distributed, the people doing this work find that it is very tiresome, owing'to the fact that'the. goods are usuallylaid on the floor and must be. picked up from the fioor and then placed on the high Shelvsalonathe wall- It is the object of this invention to produce a table whose top can be raised and lowered and which is mounted on rollers so that it can be goods are to be distributed to the shelves of stores, they are placed on the movable top and the latter is elevated to the position bringing it as nearly as possible to the level where the goods are This invention, briefly described, consists of a base which is preferably formed from a sheet of steel and which is provided at each corner withV :an inwardly extending tubular guide. The top is provided on its under side with a rod corresponding to each tubular guide and these rods telesoope into the tubular guides so as to constrain the table top to move in a certain direction. In-

-terposed betweenl the base and the table top is a vhoisting mechanism which is preferably formed from a' rack bar attached to the under side of the top and a tubular guide member secured to the base. A pinion is rotatably mounted in the guide member and positioned to engage the rack teeth and when this is turned by means of a crank, the top can be raised and lowered. A pawl is providedfor holding the top in adjusted position and means is also provided for releasing the pawl so as to permit the table top to be low- Aered.

Having thus briefiy described the invention, the same Will now be described in detail, and for this purpose reference will be had to the accompany- .ing drawing in which the preferred embodiment 'of the invention has been illustrated, and in which:

Fig. 1 is a perspective view of the improved hoisting table showing it in position adjacent a .series of shelves;

shows the construction' of the hoisting device;

and Flg. 5 is a horizontall transverse section taken on line 5-5, Fig. 4. i

In the drawing reference numeral 6 designates the floor and reference numeral 7, the shelves, thatv are arranged yalong the wall of the store. The table to which the invention relates isprovided with a base 8,.Which is preferablymade from sheet steel and is provided on' its under side With casters 9. Extending upwardly from the cornersA of the table are tubular guide members 10 which are provided at their lower ends with pipe fianges 11 that are secured to the base by means of bolts or rivets 12. The upper ends of the guides are connected by means of bars 13 whose ends are preferably electro-welded to the guides. The top 14 may also be made from a piece of sheet steel and is provided on its under surface with downwardly extending rods 15 that are so positioned that they will enter the openings in the tubular guides 10 and telescope with the latter. In order to support the top in any desired position, a hoisting device has been provided. This hoisting device consists of a tubular guide formed from two pieces of

cast metal

16 and 17. These two pieces are identical with the exception that one is a right and the other a left. Each

member

16 and 17 has a fiange 18 that rests on the base 8 and is secured to the latter by means of bolts or rivets 19. The two

members

16 and 17 are provided with

fianges

20 and 21 that are perforated for the reception of bolts or rivets 22. Telescoping in the opening between the two

members

16 and 17 is a rack 23. This rack is preferably rectangular in cross section and is provided along one side with rack teeth 24. The

members

16 and 17 are provided near their upper ends With outwardly extending'spaced fianges 25 between which are located a pinion 26 and a pawl 27. The pinion is mounted on a shaft 28 whose outer end is journalled in a bearing 29 secured to one of the cross members 13. The outer end is also provided with a crank 29 by means of which the pinion can be rotated. The pawl 27 is acted upon by a spring 30 that exerts a force moving it towards the rack teeth and it is fastened to a rod 31', whose outer end is journalled in a bearing in member 29 and is curved upwardly as indicated by reference numeral 32. When the crank 29 is rotated in one direction, it will move the rack bar 23 and the table top 14 upwardly and the pawl will hold the top in adjusted position. The upper end of the rack bar has a large flange 33 on which the top rests and to which it is secured by means of rivets 34.

When goods are to be distributed to the shelves they are laid on the top and the latter is adjusted in a Vertical direction by means of the hoisting device so as to bring the goods to the most convenient level for transferring them to the shelves. When the top is to be lowered, the p-awl is moved to inoperative position by means of the handle 32, after which the downward movement of the top can be Controlled by the crank 29.

Since the pinion 26 can be quite small in comparison with the length of the handle 29, the force applied on the handle can be great-ly multiplied so that a person Operating the hoisting device can raise a load that is equal to many 'times 'theforce applied to the handle and in this way heavy boxes can be easily elevated to a position opposite the shelf where they are to be stored and transferred xto the latter with a minimum amount of exertion. The table is also useful in removing goods lfrom the shelves in which case the operation is reversed from that described.

The hoisting device can be -constructed -in Athe manner shown, which is believed to be preferable, lbut any other suitable hoisting mechanism can be substituted if found more convenient than the one illustrated.

By means of a vdevice like that shown in the drawing and described herein, a great amount of time and labor is saved in stores due to the convenience aifo-rded by the hoi'sting table and in this way the overhead can be reduced because less time and labor is expended in placing the goods on the shelves and in removing them.

When the table is not used for the purpose for which it is especially designed, it can be employed for the display of goods in the same manner as an ordinary table.

Having described the invention What is claimed a-s new is:

A 'device of the class described, comprising, in combination, a base, a plurality of tubular guide posts secured thereto and extending upwardly therefrom, a top provided with a guide member for each guide post and telescopically connected therewith, a hoistingdevice interposed between the base `and the top for raising and lowering the top with respect to the base, said means comprising a rack 'bar atta'ched to the under surface of the table top at its center point and projecting downwardly therefrom, a rack housing attached to the upper surface of the base and provided with an opening for the reception of the rack, a pinion pivotally connected with the housing and operatively associated 'with the rack, brace members connecting the upper ends of the guide posts, one 'of said brace members Vhaving a bearing, a pinion shaft extending through the bearing, a pawl carried by the rack housing, and means accessible at 'a point adjacent the outside of a brace member forcontrolling the pawl.

RICHARD J. TINDALE.