US388859A

US388859A - Electrical cash and parcel carrier

Info

Publication number: US388859A
Authority: US
Publication date: 1888-09-04
Anticipated expiration: 1905-09-04

Description

(No Model.)

G. F. GREEN.

ELECTRICAL CASH AND PARCEL CARRIER. No. 388,859. Patented Sept. 4, 1888.

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UNITED STATES PATENT OEEIcE.

GEORGE F. GREEN, ()F KALAMAZOO, MICHIGAN, ASSIGNOR OF T\VO-TIIIRDS T4) OLIVER S. KELLEY, OF SPRINGFIELD, OIIIO.

ELECTRICAL CASH AND PARCEL CARRIER.

SPECIFICATION forming part of Letters Patent No. 388,859, dated September 4, 1888.

Serial No. 251,216. (No model.)

To aZZ whom it may concern.-

lle it known that I, GEORGE F. Kalamazoofln the county ofKalamazoo, Michi gan, haveinventcd new and useful Improvements in Electrical Cash and Parcel Carriers; and I do hereby declare that the following is a full and accurate description of the same.

In Letters Patent No. 338,150, granted to me March 16, 1886, there is shown and described a device for reversing the current through the motor automatically, and this in vention is an improvement thereon. In said patcntthe switch or current revcrser (whereby the direction ofthe current through the motor is reversed) is operated by a sliding bar placed longitudinally on said car and moved by a rocking lever actuated by contact with a fixed over head device. This requires several parts not necessary to my present improvement,and such parts are elevated and exposed.

In the accompanying drawings, Figure l is a perspective view of enough of the car and track to illustrate myinvention,showing,also, diagraminatically the electrical connections and motor. Fig. .Zis a plan of the same. Fig. I; is a transverse sectional elevation illustrating the shifting of the sliding bar.

A is my car, and I; B are the rails upon which it travels.

G is the switch-bar laid transversely on said car on a level with the bottom of the rail or thereabout, and said bar is fitted to slide endwise in proper guides fixed to the car. The pivoted switches d d are coupled with said Sliding bar (P, so as to be moved to one set of contact-points,c a, when said bar moves in one direction,and to another set of contact-points, ff, when said bar moves in the other direc tion, and thereby theenrrentis reversed in its direction through the motor.

The shifter is a cam-plate, G, fixed to the rail by one or more set-screws, and adjustable to any point on the rail desired. One of said cam-plates is fixed to one rail near one extremity of the track, and another similar cam is fixed to the other rail near to the other extremity of the track, so that the current will be automatically reversed at each extremity of its course.

S S are springs to keep the switches down upon the contaetpoints.

GREEN, of ble The electric current will pass from a suitagencrator or source of supply through a conductor, 1 2, to the pivot of one of the switches-say the switch (I. (If the generator is not on the car,such current will pass by way of a stationary conductor parallel with the path of the car and a wheel or brush carried by the car and in contact with said conductor.) Thence the current is conducted through said switch (I to one or the other (according to the position of said switch) of the contact-points cfsay to the pointf-from which it passes diagonally across by a suitable conductor, 3, to the point e, and thence by another 0011- 6 ductor, 4, to the field magnet or magnets of the motor M, which is arranged to rotate the driving-shaft of the car. From said magnets the circuit is continued through conductor 5, point e, diagonally by conductor (3 to pointf, through switch (1, and from the pivot of the latter by a conductor, 7, to the commutator and armatureof themotorM. Thence the current passes back to the source of supply by conductors S 9. \Vhcn, by contact ofsliding switclrbar G with cam-plate G, the said bar is shifted and switches (Z d moved away from pointsff andinto contact with points 0 c',the current will be reversed in the fieldmagnet of the motor, since the circuit will be by way of partsl 2d 0 5, field-magnet 4 e d 7, armature S and 9. It will, however, be understood that other electrical connections than those described above may be employed to cause the transverse movement of bar (I and the oscillation of the switches to reverse the current.

Having described my invention, I claim 1. The car A, provided with an electric motor, switches d d, circuit-conncctions suitable for reversing the fiow ofthe current upon the shifting of said switehes,and a sliding switchbar placed transverse to the length of the car, combined with a cam-plate shifter,G,attached to the rail and in the plane of the switch-bar. 2. Combined with the car A and the sliding switchbar C transversely on said car, the shifter cam-plate G ad j ustabl y attached to the rail in the plane of the switch-bar, as set forth.

GEORGE F. GREEN.

\Vitnesses:

E. O. PARSONS, BEAcH A. HALL.