US248717A - Fare-register - Google Patents

Description

(No Model.) I

F. E. DAVIS.

v FARE REGISTER. No. 248,717. Patented Oct. 25,1881.

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UNTTED STATES PATENT QEEICE.

FRANK E. DAVIS, OF 'SOMERVILLE, MASSACHUSETTS.

FARE-REGISTER.

SPECIFICATION forming part Of Letters Patent No. 248,717, dated October 25, 1881.

Application filed September 27, 1880.

To all whom it may concern:

Be it known that I, FRANK E. DAVIS, of Somerville, in the county of Middlesex and State of Massachusetts, have invented a new and useful Numerical Register, of which the following is a specification.

My invention relates to that class of registers that are used to give the sum of units of actions, the action being caused by the movement of a knob or leverwhich is actuated either directly or indirectly by the user; and it consists in combining, with a series of indi eating-disks, a series of ratchet-wheels and a single pawl, the end of the pawl being pro vided wit-h projections of unequal length, one projection working on one wheel only, each wheel having one notch so deep .thatit will allowthat projection of the pawlwhich operates it to penetratcsofar as to cause the projection that is intended to operate on the next disk to work. Thus the two disks will move together. This same construction being applied to all of the ratchets in the series, it will be understood that a certain number of movements of the pawlwill cause all of the disks to move and to register to the full extent of the device.

In the drawings, Figure l is an iuteriorview in side elevation. Fig. 2 is a front elevation,

a part being represented as broken out for the purpose of showing the interior construction.

Fig. 3 is a perspective view of the pawl. Figs.

4, 5, and 6 are drawings to represent the ratchet-wheels which operate indicating-disks. Let A represent the outside casing of my enumerator, and B theactuating-knob.

. B is a sliding bar, which is forced outwardly by the action ot' the'spring B onc end of the spring B resting against a fixed buttress, 0, attached 'to' the case A, while the OtllQIJBlld acts against apin,b, in the sliding bar B. In

use the operator pushes the bar B in, and the ratchet-wheel having attached to it an indicat- (No model.)

ection d acting upon the unit-ratchet H and being longer than the other two projections, it prevents them from engagingwith the teeth of the ratchets H H, except when thedeep notch M on the ratchet H comes into place. Then the projection 61 falls into the deep notch and allows the projection dto act on the tensratchet .H. turned one notch or one-tenth of its circnmfer- Thus the tens-ratchet will be,

once as often as the unit-ratchet H has made a whole revolution. Vhcn the tens-wheel has made a full revolution, then the notches M and M will coincide, so as to allow both of the projections dd to enter the deep notches, thus causing the short projection d to engage with the hundreds wheel H and causeitto move one notch.

By this device I am enabled to record units, tens, and hundreds without the intervention of any train of wheels or levers. The capacity of the enumerator might be increased indefinitely by adding to the number of the indicating-disks.

For convenience in reading the figures I have an opening at A Figs. 1 and 2. This may be protected by glass or mica, if desirable.

To set the indicating-disks K K K I have a part, A, of the case A hung on a hinge, a, so that it can be turned back and allow the user to adjust the disk to the zero-points.

I claim- The combination, in a registering device, of the knob B, its sliding bar B, spring B pawl D, having projections d (1 d with the ratchet-wheels H H H and disks K K K, all operating together substantially as described, and for the purpose set forth.

FRANK E. DAVIS.

Witnesses:

HELEN M. FEEGAN, J. W. DAVIS.

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