US1123353A - Drawer mechanism for cash-registers. - Google Patents

Description

G. L. NELSON. DRAWER MECHANISM FOR CASH REGISTERS. APPLICATION FILED JAN.15, 1914.

1,123,353. Patented Jan. 5, 1915.

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DRAWER MECHANISM FOR CASH REGISTERS.

APPLICATION FILED JAN, 15, 1914.

Patented Jan. 5, 1915.

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c. L. NELSDN. DRAWER MECHANISM FOR CASH REGISTERS. APPLICATION FILED JAN.15,1914.

1,123,353, Patented Jan.5,1915.

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CARL L. NELSON, OF SEATTLE, IVASHINGTON, ASSIGNOB. TO THE NATIONAL CASH REGISTER COMPANY, OF DAYTON, OHIO, A CORPORATION PORATED IN 1966.)

OF OHIO, (INCOR- DRA'WER MECHANISM FOR CASH-REGISTERS.

Specification of Letters Patent.

Patented Jan. 5, 1915.

Original application filed June 10, 1905, Serial No. 284,610. Divided and this application filed January 15, 1914. Serial No. 812,270.

To all 107mm it may concern:

Be it known that I, CARL L. NELsoN, a citizen of the United States, residing at Seattle, in the county of King and State of Washington, have invented certain new and useful Improvements in Drawer Mechanism for Cash-Registers, of which I declare the following to be a full, clear, and exact description.

My invention has for its principal objects the improvement and simplification of cash registers and provision thereof with means for accomplishing certain new results.

More specifically the objects of the invention include, among others which will appear below, the provision of an automatic drawer-operated machine with means for varying the speed of operating movement transmitted by the drawer during its movement.

All the patentable subject matter disclosed in this application is not claimed herein however, as this represents one division of the original application filed June 10, 1905, Serial No. 204,610 and is intended to embody claims only to the drawer operating mechanism of the invention. Another divisional application is also being filed in which it is intended to embody the claims to the indicating mechanism of my invention.

Reference is to be had to the accompanying drawings forming a part of this specification, in which similar characters of ref erence indicate corresponding parts in all the figures.

Figure 1 is embodying the a sectional view of a machine present invention. Fig. 2

is a plan of the table on which the machine is supported; Fig. 3 is a fragmentary sectional view of the parts shown in Fig. 2.

Fig. 1 is a side elevation partly in section,

of the operating bar with attachments; Fig.

5 is an end elevation of the same; Figs. 6 and 7 are perspective views of details.

Table and frame.-The table is provided with a cover 42 (Figs. 1 and 2) which is removable from the table and supports the various parts of the frame or casing.

Drawer operating mechanism-The table is holiow (see Figs. 1 and 3) and is pro-- vided with a drawer 54 which is preferably provided with compartments 55 and has a plate 56 at the rear.

Above the drawer the table is provided with a plate 57 for supporting part of the operating mechanism for the drawer (Figs. 2 and 3). Upon this plate is mounted a lever 58, the latter being pivoted to the plate 57 by means of a pin ihis lever is connected, by means of a chain 60 or other flexible connection passing around a pulley 61, with the drawer. This chain is shown as being connected with a hook 62 mounted on a bracket 63 mounted upon the plate 56 (Figs. 8 and 7). A spring 6% mounted on the plate 57 normally pulls the lever away from the pulley (31 and constantly exerts a motive force for opening the drawer. At the beginning of the motion of opening the drawer it is retarded by the bearins of a roller 65 on a short arm 66 of the lever 58 against a cam surface 67 on a bar 68. The purpose of this is to avoid the rapid motion which would be given to the drawer by the motor spring 6i, and to permit the drawer to close with a sharp motion at the end of the stroke. The bar 68 is connected (see Fig. 2) to a pair of slides (39 movable on the plate 57, and it is normally forced toward the roller 65 by means of a motor spring 70, which although acting to produce motion in the same direction as the spring 61-, is designed especially for another oflice which will be described below. The motion of the bar 68 is kept in a straight line by means of the slides (39, as they are constrained to move in parallel lines by the end pieces of the frame of the machine against which they are placed, and by a. projection 69 (Fig. 2) moving in a slot 57 The plate 57 is provided with a rack 71 (Fig. 2) along which the bracket 63 passes. In order to prevent the drawer from being partly opened or closed and the motion stopped without completing it, this bracket is provided with a hanging pawl 72, (Fig. 3). This pawl is pivoted at a point well above its center of gravity, and on the lower part is provided with two notches 73 (Fig. 6) having oppositely extending teeth 74: below them. As the pawl passes over he rack in either direction it will be forced to the rear with respect to the direction of motion, and one of the teeth 7i passing along the top of the rack will be at all times in a position to engage the rack and stop the drawer if it is attempted to move it in the other direction. When the end of the rack is reached, however, the pawl is permitted to drop from it so as to assume the position shown in Fig. 3, and then upon reversing the motion of the drawer the same conditions are repeated. The plate 57 is provided with a slot 75 for receiving the pawl and the bracket 63. The bracket 63 is provided (Figs. 3 and 7) with a projection 76 extending to the rear, and a projection 77 extending to the side and by which it is guided below the cover-plate 57. The plate 57 has a slot 57 through which the projection 77 can be inserted.

From the construction so far described, it will be seen that the opening of the drawer by the operation of the spring 64: causes the bar 08 to move to the front in Fig. 2 a certain distance, taking with it the slides 69; also that the bracket 63 is simultaneously caused to move with the drawer throughout the length of the slot 7 5, carrying with it the pawl 72, the latter passing over the rack 71 and preventing the movement of the drawer in the wrong direction. It will also be seen that the drawer is compelled to start to open with a slow motion, and that after the start is made the motion will increase, according to the natural acceleration of speed due to the spring 64, while in closing, the drawer can be forced back against the resistance of the spring, and at the end of the stroke it can easily be moved to its extreme point.

Drawer Zoe/ring and releasing cZevice.In closed position the drawer is intended to be held by the operation of a pin 79 (Fig. 1) passing through a slot 80 in the table, and normally dropping by gravity in front of a projection 81 on the drawer. This projection has a slanting surface 82 at the rear in order to assist in forcing the pin up when the drawer is closed, and assure that it will reach the top of the incline and fall behind the projection. This pin therefore automatically locks the drawer in closed position when it is forced to the end of its stroke, and it must be displaced before the drawer can be opened. In order to accomplish this result the pin extends upwardly some distance from the top of the table, and is provided with a guide 83. It is also provided with a passage or notch S l through which passes the end of a bar 85 (Figs. 4:, 5 and 7). This bar is provided with a slanting or cam surface 86, which upon being moved to the rear will engage the top of the slot 84 and lift the pin. For the purpose of moving this bar it is pivotally connected by a bolt or pin 87 with a bell crank 88, which is pivoted upon a shaft 89 passing through the machine from one end frame 53 to the other. This bell-crank is (Figs. 1 and 4) duplicated at the two ends of the machine, the two parts of it being connected by an operating bar 90. This operating bar preferably eX- tends across the front of the machine so that it will be within easy reach of an operator at all times. Obviously the depression of the operating bar causes the reciprocation of the bar 85 to the rear, and the engagement of the surface 86 with the pin 79 so as to raise the latter and allow the drawer to be opened by the mechanism described.

While the form of mechanism herein shown and described is admirably adapted to fulfil the objects primarily stated, it is to be understood that it is not intended to confine the invention to the one form of embodiment herein shown and described, as it is susceptible of embodiment in various forms, all coming within the scope of the claims which follow.

what is claimed is 1. In acash register, the combination with a base, of a cash receptacle therein, alever and controlling spring connected to said receptacle to operate same, and a spring pressed camming element positioned to retard the first part of the return movement of said receptacle and to assist the last part of such movement.

2. In a cash register, the combination with a base, of a cash receptacle therein, a lever and connections for opening said receptacle, a spring for operating said lever, and a spring pressed cam positioned to retard said lever during part of the movement and to assist the lever during another part of its movement.

3. In a cash register, the combination of a table, a drawer therein, means for opening the drawer, means for holding the drawer in closed position, said first-named means comprising a lever, connecting means between said lever and drawer, a spring for the lever, and means for retarding the motion of the drawer at the beginning of its stroke; said last-named means comprising a slidable member having a cam surface adapted to guide and control one arm of said lever.

4. In a cash register, the combination of a movable drawer, a lever connected with the drawer, resilient means for moving the lever, a bar mounted adjacent to said lever and having a cam surface for engaging the short arm of the lever, resilient means for moving said bar toward the short arm of the lever, and means for guiding said bar.

5. In a cash register, the combination of a table, a drawer therefor, a plate above the drawer, a lever connected with the drawer and located above said plate, a spring for moving said lever, a roller connected with the short arm of the lever, a bar slidingly mounted upon said plate, a frame having side pieces located above said plate, a pair of guides connected with said bar and movable along the outer surfaces of said side pieces for guiding the bar, a spring connected with the bar for moving it toward the lever, and means on the bar for retarding the motion of the lever and drawer at the beginning of their strokes.

(5. In a cash register, the combination of a drawer, a bracket rigidly mounted thereon, a flexible connection engaging said bracket, a lever connected with said flexible connection for moving the drawer, a spring for operating said lever, and means cooperating with said lever for governing its movement at difierent portions of the travel of said drawer.

7. In a cash register, the combination with a cash safe having a movable part, of means for retaining said part in position to conceal the contents of the safe, means for releasing said retaining means, a lever and connection therefrom to said movable part, means for moving said lever and thereby rendering said safe accessible, and a cam against which one arm of said lever bears to control its motion.

8. in a cash register, the combination with a cash safe having a movable part, of a lever and connections therefrom to said movable part, means for moving said lever to render the safe accessible, and a bar, spring operated but controlled by said lever, and itself serving to control the differential movements of the machine.

9. In a cash register, the combination of a movable drawer, a lever connected with the drawer, resilient means for moving the lever, a bar mounted adjacent to said lever and having a cam surface for engaging the short arm of the lever, resilient means for moving said bar toward the short arm of the lever, means for guiding said bar, means for holding the drawer in closed position, an operating bar, and means connected with the operating bar for disengaging the holding means from the drawer when the bar is depressed.

10. In a cash register, the combination of a drawer, a key-holding plate, a rod having means for engaging said plate, a cam on said rod having a rounded rear surface and a catch on the front surface, and a projection adapted to be moved when the drawer is closed to engage said catch and oscillate the rod.

11. In a cash register, the combination with a base, of a cash receptacle therein, a lever and controlling spring therefor for opening said receptacle, and a spring pressed camming bar for assisting the final increment of return movement of said receptacle.

In testimony whereof I affix my signature in the presence of two witnesses.

CARL L. NELSON.

Witnesses:

(inoacn H. DowLING, H. McC. BiLLmosLnY.

Copiel 0! this patent may be obtained for five cents each, by addressing the Commissioner of Eatenta.

Washington. D. G.

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