US1521945A - Adjustable worktable for adding machines and adding-machine stands - Google Patents

Description

J 6, 1925. 1,521,945 E. LE R. HARDING ADJUSTABLE WORK'I'ABLB FOR ADDING MACHINES AND ADDING CHINE STANDS 'Fned nm 1 2; 2 Sheets-Shoot 1 7 I). :u u a. m II n A H a i a Lil l\ n a A T a v z 9 m llllllllJ I 6 a 2 4 m o 6 A a a L L f .1! 1 rlll 1 valrli I/YVE/IVTOKZ 144,04 f

Jan, 6, 1925.

, I E. LE R- HARDING ADJUSTABLE WORKTABLE FOR ADDING MACHINES AND ADDING MACKINE STANDS Filed Aug. '23, 192; 2 Shoots-Sheet 2 III/ll!!! I II I ERNEST LE ROY HARDING, OF THREE RIVERS, QUEBEC, CANADA.

ADJUSTABLE WORKTABLE FOR ADDING MACHINES AND ADDING-MACHINE STANDS.

Application filed August 23, 1923'.

' To all whom it may concern:

Be it known thatI, ERNEST L. HARDING, a citizen of the United States, residing at Three Rivers, in the county of St. Maurice, Province of Quebec, Canada, have invented certain new and useful Improvements in Adjustable Worktables for Adding Ma.- chines and Adding-Machine Stands, of Which the following is a specification.

This invention relates to improvements in adding machines and adding-machine stands, more particularly of the Burroughs type, in which a table is so arranged as to be capable of being conveniently and quickly moved into various positions over and clear of the keyboard by the operator of the adding machine, and my objects are First, to provide a table upon which papers may be laid near at hand to the operator,

Second, to reduce the probability of error in transferring written figures to type, due to the present necessity of the operator constantly turning his eyes from his written notes to the adding machine keyboard.

Third, to increase the efficiency of the operator and of the adding machine by con-.

veniently and mechanically bringing such written figures as ma require to be typed, and the machine key card, into the focus of the eyes of the operator simultaneously.

I attain these objects by the mechanism illustrated in the accompanying drawings,

- in which Fig. 1 is a front elevation of an adding machine and a stand showing my device mounted to the left of the adding machine keyboard.

Fig. 2 is an elevation, showing the left side and is a projection of Fig. 1.

Fig. 3 is an elevation showing the back of the machine as an inverted projection of Fig. l and more particularly showing the various members of my device.

Fig. 4 is a left side elevation showing I,

Serial No. 659,004.

of my invention. Similar numbers refer'to similar parts throughout.

The table 6, Fig. 1, is supported by the v straps or supports 7 and 8, Fig. 3. The straps 7 are fastened to the under side of the table 6 and are terminated at each ex-v tremity by eyes to receive the guides 9 and 1.0. The support 8, Fig. 3, is a fiat strap rivetted to the under side of the table 6 and having a hole to receive the guide 9, Fig. 3. The function of the, strap '8 is to steady the guide 9 and preserve its relation to the table 6. The eyes of the straps 7 are drilled and tapped to receive set screws marked 11, Fig. 3, which bear against the guide 9 causing it to move with the table 6. The spacing between the straps 7, and between the strap 7 and 8 limits the travel of the table 6. The guide 10, however, is fixed in relation to the stand or machine, and the eyes in the straps 7 shown at 13, having no set screws, allow thetable to move freely along it.

The guide 10 is rigidly fastened to the machine stand by the members 14, 15 and 16, Fig. 1, of which 14 and 15 may be extensions of the machine stand frame, and a part of it, or may be bored to a true fit and secured by means of set screws at 18 as I have shown it. The other ends of the members l4 and 15 are bored to receive the guide 10, the eye in the member 14 being fitted with a set screw 19 to hold the guide 10 rigid.

The member. 16 is a brace, which I have shown bolted to the machine stand frame at 20, and supporting the guide 10 at its other extremity holding said guide rigid by means of an eye and set screw 21, Fig. 3. Theoffset of the brace 16 is determined by the desired travel of the table 6. For the same reason the offset in the member 14 is limited.

The member 22, Fig. 3, is a Y-shape-il support for the table, and is shown in'detail in Fig. 5. The branches 22 and 22 terminate in eyes to receive the guide 9, Fig. 3, of such diameter as to allow the guide 9, which is fastened to the table 6, to move freely through them. The branch marked 22 is hollow as portrayed in Fig. 6, the inside diameter being such as to make a. sliding fit over the rod, or tube 23, Fig. 6, as it is deform a trigger arrangement or latch to perthe casting 25 shown in "through hole 25?, Fig. 7, and fment' ofthe casting 25 itself of "the machine stand frame as Figs. 2 and t through the hole 25".

- along the rod 23,

mit the member v the back side of the table 6 (through the guide?) and the straps be sealed air tight.

"Fig. 4. But

Fig. 1, and consequently 7 and 8) to be raised and lowered along the rod the operator.

The rod or tube 23 is fastened to the adding machine frame at 2% by some means which will permit it to an aXis at the point of If is a tube, the lower end must It. is also connected to the frame of the machine stand by means of detail in Figs. 5,6 and 7 which casting is of such construction as to permit the free movement of the rod 23 also free move along the brace shown in the member 23 The plunger 22 Fig. 6, is titted with a trigger release 26, which, connected by the rod 27 to the plunger 22 ing said plunger against the pressure of the spring 22 and allows the member 22 to fall easily and gently against the air compressed in 22*, consequently lowering the back-side of the table through an are about an axis through the center line of the guide 10, that is from the position of the table shown in Fig. 2 to that shown in this action can only be accomplished when the table 6 is moved to such a position as chine keyboard, on account of the guard 28, Fig. 3, which is firmly riveted to the straps 7 and which does not permit of the trigger 26 being operated until the table 6 is free of the keyboard of the machine. The table is raised by lifting the back end until the plunger 22 clears the rod 23, when it will prevent the table falling until the trigger 26 is operated. The sides of the rod 23 and the end of the member 22 where they come in mutual contact, to be plain, thus giving the operator the choice of any two positions of the table between the limits above-mentioned, these positions being governed by the length of the rod 23 which is cut to conform to his choice of positions, which for any one rod, will in this case be its highest and its lowest positions. The mechanism employed to hold the table in an elevated 23 at the will of move slightly about contact with the ma chine frame, and which I have shown as a stud 24 secured to the machine frame.

permits withdraw-' to be clear of the adding ma position, namely members 22, 22, 22 22, has been referred to in divers places throughout the specifications and claims as both latch and trigger, with the distinction that the table, when elevated, is held in that'position by the latch 22 and is also released from that position, and allowed to fall by the trigger 22.

In accordance with the provisions of the patent statutes, I have herein described the principle of operation of my invention, to-

" getherwith the apparatus which I now consider to represent the best embodiment thereof, but I desire to have it'understood that the apparatus shown is only illustrative and that the invention can be carried out by other means. Also, while it isjdesigned to use the various features and elements in the combination and relations described, some of these may be altered and others omitted without interfering with the more general results outlined and the invention extends to such use. I

- Having described my invention, what I claim and desire to secure by Letters l. The combination with an adding machine and adding machine stand, of ii-at table, supported on suitable guides, with means of changing the inclination of the plane surface of said table to any angle about'an axis parallel to said guides, and

' means of locking saidtable at a plurality of positions within the limits of 0 and 90 upward'toward thevert-ical from the normal horizontal plane of said table, and means of sliding said table along said guides and over the keyboard, and means of preventing said tabl from changing its elevation or inclination except atpredetermined positions along said guides, and then only at the will of the operator.

2. The combination with a structure such as recited in clainrl, of means of locking the table of said structure at a. plurality of positions within the limits of 0 and 90 upward toward the vertical from the normal horizontal plane of said table, comprising an adjustable support and a catch working against a spring.

3. The combination, with an adding ma chine having a table such as recited in claim 1, of means of lowering said table, comprising a. tube, a piston, and a check \alve.

at. Thecombination, with a table such as recited in claim 1., of means of loweringsaid table, comprisinga tube sliding upon a r0 5. The combination, with an adding machine, of a table and means of moving said table over the adding machine keyboard. comprising sliding guides, and fixed guides. said table sliding thereon.-

ERNEST LE ROY HARDING Patent llii

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