US 2204041 A
Abstract available in
Claims available in
Description (OCR text may contain errors)
1940- i s. JEFFERSON 2,204,041
I ELECTRIC ANIMAL PROD Filed Oct. 23, 1939 64% 2 ii fa [a $2726.95 aq/Z ff h on ,2 1 2:3 INVENTOR 19 y flmjmva i ATTORNEYS Patented June 11,1940
UNITED A STATES PATENT orrlcs mutfizxixzfixt i 1. Claim.
This invention relates to electric animal mods- 6 simultaneously engaged with the hide of an animal and then pushed in firmly against the animal in order to operate a switch for closing the primary circuit of an induction coil to the end that accidental shocks to the operator will be positively preventedv I A further object is to providea device of this character which will be formed of a few strong simple-and'durable parts, which-willbe inexpensive to manufacture, and which will not easily get out of order.
With the above and other objects in view the invention consists of certain novel detailsof construction and combination of parts hereinafteriully described and, claimed, it being understood go that various modifications may be resorted to within the scope of the appended claim without departing from the spirit or sacrificing any of the advantages of the invention.
' In-the accompanyin drawing forming a part of this specification: t
Figure 1 is a side elevation of an animal prod constructed in accordance with the invention.
Figure 2 is a longitudinal sectional view of the prod.
Figure 3 is a diagrammatic view of the electrical connection of the prod.
Referring now to the drawing in which like characters of reference designate similar parts in thevarious views, ll designates an elongated metal casing having a removable handle ll secured thereto through the medium of a pin l2 and bayonet slot IS. A leaf spring ll, best shown in Figure 2, is secured to the inner end ofthe handle by screws l5 and is provided at the ends Q with V-shaped tips it which engage the inner surface of and are grounded upon the metal casing Ilij The leaf spring is provided with a downwardly struck portion I'I which is adapted to contact with the metal bottom of the endmost battery cell it of a plurality of cells'which are disposed in the casing in stacked relation in the. usual manner.
A pair of metal rods it are slidably mounted in openings 20 formed in an insulating cap 2| which closes the end of the casing opposite the handle. These rods terminate in ball tips and form high tension electric terminals of an induction coil as will later appear. Each rod is provided An insulating disk 25 is secured in the casing inspaced relation to the cap it by screws 28. The diskis provided with a pair of switch contacts 21 and II disposed on opposite sides of the center of the disk; One of the contacts is grounded to the casing by a leaf spring 2!. The other contact is connected to one end of the primary winding of an induction coil ll by a 1 conductor it as best shown in Figure 3.
A leaf spring 32, forming a bridging circuit 10 closer for the contacts 21 and ll, is secured at the center'tothe center of the disk 25 by a bolt II. The ends of the spring overlie and are spaced from insulating heads 34 threadedly engaged upon the inner ends of the rods It. The other end of the primary winding of the induction coil" is connected by a conductor Ii to one member of a vibrator-3i. the other member of the vibrator being connected by a conductor 31 to the center contact of the lowermost battery cell.
It can now be seen that before the induction coil can be energized by closing of the primary .circuit both rods I! must be disposed in engagementwith the hide of the animal and then the. rods must be pushed inwardly by pressure upon the handle it until both ends of the bridging switch contact formed by the leaf spring 32 engages the switch contacts, 21 and 20 of the primary circuit or the induction coil II.
From the above description it is thought that the'construction and operation of the invention will be fully understood without further explanation.
What is claimed is:
An electric prod comprising a casing, an induction coil in the casing, battery cells in the casing, a circuit including the battery cells and the primary winding of the inductioncoil, a pair of spaced stationary switch contacts in said circuit. a bridging leafspring contact centrally secured in the casing and having the ends overlapping and spaced from the stationary switch contacts, and a pair of prod rods mounted for limited sliding movement in the casing and proiecting from one end of the casing, said prod rods being connected to the secondary winding of the transformer and forming discharge terminals for said induction coil, said rods when pressed to their limit ofmovement in the casing by being manually forced against an animal's hide engaging the ends of the leaf/spring contact and, moving it to circuit closing position with said stationary contacts.