US2405687A - Calculating device - Google Patents

Description

Aug. 13, 1946. w. F. CLEAVER CALCULATING DEVICE Filed May 14, 1945 2 Sheets-Sheet l I/VVENT R' g K 7am,

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Patented Aug. 13, 1946 William F. Cleaver, Westmount, Quebec, Canada Application May 14, 1945, Serial No. 593,742 In Canada May 31, 1944 2 Claims. 1

This invention relates to calculating devices and more particularly to providing a machine whereby perforated time cards can be rapidly and accurately extended to determine the amount of wages due the workman, for the elapsed time indicated by the perforations.

The device as set forth hereinafter can be adapted to function with other forms of prepared cards for a variety of purposes.

t The main object of the invention is to enable an operator to obtain accurate and rapid equations in hours and minutes and dollars and cents representing the wages due on the working time indicated by the holes pierced in the card, thereby reducing to a minimum the time required to I prepare a correct statement of the wages due.

In the device shown and described provision is made for a six day period. The device does not print the amount, but exposes on a dial the daily total, computed for the operator to take down on an adding machine. The device is shown in the accompanying drawings in which.

Figure 1 is a perspective View of the device.

Figure 2 is a vertical cross section.

Figure 3 is a horizontal cross section.

Figure 4 is a side View of one of the time rings.

Figure 5 shows surface markings on the time rings.

Figure 6 shows the dial slots in the rate drum, exposing the figures.

Figure '7 shows details of one of the operating handles.

Figure 8 shows a complete rate drum.

Figure 9 is an illustration of a time card perforated.

As seen in Figure 1, a base I I] has two side pedestals I5 supporting the shaft 3. The ends of the shaft 3 are squared to fit into the slots I6 and are held by latches I'I.

Mounted to rotate on the shaft 3 are six time rings 2, one for each day. The set of rings 2 are enclosed in a cylindrical light metal casing I I forming a drum shaped housing Fig. 8, which is secured to the shaft 3.

This drum I I is provided with six slots 42 on its under side, that permit the racks 4 to travel through the drum and engage with the gears 2 I. There are also six apertures I2 as shown in Fig, 6, for reading the data on each time ring. Each drum II represents a specific rate of wages per hour and is readily interchangeable on the calculator. Each time ring 2 has a bushing inside and a gear 2| outside forming bearings.

The time rings 2 are connected to the shaft 3 by means of fiat spiral springs 32, the inner end of the spring is held stationary to the shaft by means of pin 3|, the outer end of the spring is connected to pin 23 on the inner side of the time ring wall. Pin 24 which is also connected to the inner wall of the time ring 2 comes to rest against stationary pin on the shaft 3, under the pressure of the spring 32. This pin 30 allows the time ring 2 to make one revolution. Racks 4 in vertical guides and 4| normally mesh with gears 2| when held up by a spring I2 to controlled bar I, which is journalled in bearings ID. A lever II at one end of bar I provides means for lowering the bar I and releasing the racks 4 from the gears 2 I.

The forward ends of the racks 4 are pivoted to light metal rods 5 which terminate in operating handles 6, having spring ball points 60. The rods 5 have guides 5I. The handles 6 are adapted to travel in narrow slots I3 in the casing I, situated directly above the columns with the holes 80 perforated in the time card 8.

The time card 8 is inserted through an opening I4 in the end of the casing I and comes to rest in the spring clips 8|. Its perforated columns are then directly below slots I3, and this permits the ball points to press upon it and enter the holes 80.

The handles 6 have springs 6| in tubes 62 bearing on projecting balls 60 which are adapted to enter the perforations in the time card 8.

Each rate drum Fig. 8 consists of six calculating rings 2 each ring is printed on its outer sur face 25 as shown in Fig. 5, showing the elapsed time and the equivalent dollars and cents represented by the rate of that particular drum. Any number of drums of various rates can be used with each calculator.

The supporting bar I which is operated by lever II is kept in a raised position by a spring I2. When this lever is pressed down the racks 4 are disengaged from the gears 2 I, this allows the calculating rings 2 all to return t zero by means of the spring 32.

The time card, illustrated in Figure 9 of the drawings, is marked ed in fifteen minute periods from seven a. m. to six p. m. the noon hour from twelve to one is omitted and all cards that punch out at twelve o'clock and in again at one o'clock are punched through the same hole-at both times, and when the cards are so perforated and are extended, it is only necessary to use the starting and finishing hole in the card to get a complete record for the day.

The method of operating the calculating machine is as follows: All the cards of the same rate are stacked together and valued, when the first stack is finished, the rate drum is changed for that of the next stack of cards of a difierent rate.

A card 8 is inserted in the slot l4 and pressed home between the spring clips 8| where it is firmly held in proper position with its perforated columns directly below the slots IS.

The handles 6 are drawn forward towards the operator until their ballpoints 60 enter the first perforations 80. The lever 1| is'then-lowered, which releases the racks 4 from the gears 2| permitting all the rings 2 to return to zero.

The handles 6 however remain over th perforations their ball points have entered. Assoon as the lever H is released the bar I raises the racks 4 to mesh with the gears 2 l The handles first and second perforations in the columns of the cards.

The readings on the dials are taken down by the operator on an adding machine, subsequent intervals are recorded in the same manner.

I claim:

1. In a device of the class specified, a series of drums rotatably mounted on a fixed shaft and having coil spring connections thereto, scales on the outer surface of the drums showing time intervals and equivalent wages at a given rate, gears on the shaft secured to each drum, racks adapted to mesh with the gears when contacted by a control bar, pivoted extensions to the racks having terminal arms with ball points adapted to enter perforations in a time card inserted below a slotted casing in which the arms travel.

2. In a device of the class specified, a base having side pedestals supporting a fixed shaft, a series of drums rotatably mounted on the shaft, coil springs connecting the drums to the shaft, gears on the shaft secured to each drum, racks under the gears, a control bar adapted to mesh the racks with the gears, pivoted xtensions to the racks,

terminal arms to the extensions having ball points

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