US1290362A - Electric switch. - Google Patents

Description

l. H. RUSBY.

ELECTRIC SWITCH; APPLICATION FI LED JUNE 13, 1917.

1 fi m fi n. Patelited Jan. 7, 1919.

I 2 SHEETS--SHEET F192.

J. H. RUSBY.

ELECTRIC SWITCH.

APPLICATION FILED IUNE I3| 91?.

1,9036% Patented Jan. 7, 1919.

2 8HEETSSHEET 2- INVENTOR ATTORNEYS mounting.

JOSEPH n. nose or nouns, new JERSEY.

ELECTRIC SWITCH.

Specification of Letters Patent.

Application filed June 13, 1917. Serial No. 174,4416.

To all whom 'it hayconcem:

Be it known that JosnPH H. RUsBY, a citizen of the United States, residing at Nutley, in the county of Essex and State of New Jersey, have invented new and useful Improvements in Electric Switches, of whichthe following is a specification.

This-invention relates tothat class of electric switches in which a pair of spring Y controlled push buttons are operated to snap the blades into engagement or out of'con tact with the conductor devices to close or open the circuit.

The invention is designed to comprehend simple and eflicient means coacting with a longitudinally slotted hinged lug for universally adjusting a switch relative to a wall. v

The invention further provides the devices for making and breakingthe current 'witha strongly braced frame, and a blade carrier of peculiar shape connected to the frame so that when operating the switch none of .theseactuating parts will accidentally break down or get out'of order. Another object of the invention is, to provide means for securing the blades to a car rier so as to prevent any short circuiting and to give positive engagement with the contact devices.

The other objects of the invention are morefully described in the following specification and claims and illustrated in the accompanying drawing in which Figure 1 represents a front elevation of a switch embodying this invention.

* Fig. 2 is a longitudinal section taken along the line m of the same.

Fig. 3 1s a ,vertical transverse section taken along the line 3 'y of' the same.

Fig. 4 is a front view of a blade carrier. Fig. 5-is a plan or top view of the same. Fig. 6 is a plan or top view of a frame and latch.

Fig. 7 is a side view of the same.

Fig. 8 is a slde VleW of a rock lever, the blades having beenremoved.

- Fig. 9 isa similar view looking at the opposite side of the device;

Fig. 10 is a. detailed section of a barrel on a larger scale. Fig. 11 is a detailedsection of a blade Figs. 12, 13, 14 and 15 are perspective views of the frame, blade carrier, rock lever and latch respectively.

' an electric circuit.

In this drawing the letter a, designates a Patented J an. 7, 1919.

block which can he made of any good insulating substance preferably such as porce lam. The block is equipped with a chamher b having a front wall a the object of these parts will be hereinafter described. A strap (1 is secured at e to the face of the block. The strap and the block have holes near each end for the insertion of a post or bolt 7 and a longitudinally. slotted lug g is end of the strap, as denoted in Figs. 1 and 2. Tapped holes 7:. located in the end of the strap, one being opposite the other are for connected by means of the said post to the engagement with ordinary cover securing screws not shown. The posts are connected at their rear ends to an a rmoring shell 11 made to cover the rear of the chamber and extend partly up the sides of the block.

The posts when in place will hold the shell to the block and thus prevent it from slipping backward. r

A device for securing and adjusting the block relative to the wall consists of a threaded stemj having a head is with a circumferential groove we best seen in Fig. 2. The grooved annular portion of the head of the screw engages the lateral walls of the longitudinal slot in the lug g and the threaded stem coacts with the wall devices not shown. This construction of the screw will permit vertical as well as to and fro adjustment of the switch block. Furthermore, the lug g by being swingingly connected to the strap as descrlbed will when the adjusting screw is actuated permit the block to be laterally adjusted or properly alined with the opening in the wall.

.On the face of the block are located a series of conductor devices 11. with contact blades a suspended from the conductors into the said .chamberb of the block. These devices constitute the leads and terminals of The makeand break mechanism to snap into engagement with the conductor blades includes a frame 3: with a forward portion 9 having holes for coaction with a pair of screws 1' for fastening the frame to the front of the Wall 0 of thechamber. A hollowstud or sleeve 8 projects from one side of the frame, and it is fastened to the frame by riveting. one end of it tothe frame as indicated in Fig. 3. V

A barrel t' of practically lar e diameter is mountedto oscillate on the hollow. stud.

cured by riveting tongues 12 forming projections from the periphery to the open end of the barrel. The rock lever has an upper portion bent at right angles to its body to coact with the shanks of a. coiled sprin 13 arranged on the barrel. A pair of push uttons 14 for actuating the rock lever are pivoted at 15 to the lever. At the head of the barrel is fastened a disk 15'' to confine the spring.

A blade carrier has arms 16 and 16, to straddle the barrel and for swinging connection with the frame. The fastening for thediskt includes a pin 17 extending inwardly through the head of the barrel, the end 18 thereof being reduced for riveting the disk to the head. The pin also has a shoulder portion 19 and'a. pivot end 20, the function of the latter element will be hereinafter described. The arms 16 and'16 of the blade carrier are parallel to each other and they are joined together by a contiguous front member 21 disposed at right angles to the arms' This member has a rearward bend parallel to the arms and a yoke member 22 joins the front member to the arm 16. This construction permits the carrier to be shaped from a single sheet of steel and at the same time by its peculiar shape it forms a recess to give room for a latching device. The yoke member also limits the movement of the carrier by engaging one or the other side ofthe, cut out portion of-the frame. The arm 16 has lateral lugs 23 for coaction with a latching member 24 described below.

This latching device consists of a link 24 mounted on the pivot 20 projecting from the barrel. This link has a lug 25 sliding in a slot 26 located in the forward portion of the frame, The latch is on a line with the pivots 15 near the fulcrum heads 33 tened together of the rocking lever 11 so that when the lever is operated the latchwill move in a practically rectilinearline with the slot.

A pin 27 and the ends of this pin strike against the walls of the chamber to obviate longitudinal movement. The pin projects beyond the frame on one side and its stud on the other so that it will serve for mounting a air of blades 28 each. being made of two sections of thin copper. The blades are insulated from the remainder of the mechanism by strips of mlca 29 located between two metal strips 30 best seen in Fig. 11. The lower portions of these elements are fastened together by means of an eyelet 31 also-employed for mountlng the blades onto thejpin. The opposite ends of the blade elements are fasouter strip. The: bolt and the eyelet have fittedlntov apertures 34 in the arms pivoted approximately is carried by the hollow stud 8' by a bolt-32 riveted to the of the blade carrier. This method of movably. mounting the blades to the carr er makes a durable structure giving posltlve alinement of the blades with the contacts and prevents short circuiting of the current.

When it is desired to operate the swltch to close the circuit the upper button is pushed downward to rock the lever 42 and torsion or wind the coiled spring. The lug 25 of the latch has in the interval moved upward in the slot 26 hence when the lever 4) reaches the end of its stroke, the lug 25 has moved beyond the lugs 23 on the carrier thus releasing the blades which by the tension of the spring snap into engagement with the conductors 0' to close the circuit.

I claim 1. An electric switch comprising a longitudinally slotted hinged lug, and an adjusting screw made to engage a support seated in the slot, said screw having an enlargement above and below the slot.

2. An electric switchcomprising an insulating block provided with a strap, a slotted lug member swingingly connected to the strap for laterally adjusting the block and a screw made to engage a supporthavmg a grooved head for en agement with the slot to vertically adjust t e block.

3. An electric switch comprising'an insulating block provided with a strap, a longitudinally slotted lug member swingingly connected to the strap for laterally adjusting the block, a screw made to engage a support having an annular circumferential groove for engagement with the slot for vertical and to and fro adjustment of the block.

4. An electric switch comprising a frame, a hollow stud fixed to the frame, a pin rotatively inserted in the stud with an end projecting beyond the stud, a blade carrier provided with an eyelet and mounted thereby on said end, said blade carrier being further provided with an aperture, a bolt head secured in the aperture, a switch blade mounted on the eyelet and the bolt, insulating material arranged on both sides of the blade, and a metal strip disposed on each outer side of the insulatin material; the blade carrier, switch bla e, insulating material and metal strips being made secure by said eyelet and bolt.

5. An electric switch comprising a vertical supporting frame, a stud fixed at a right angle on the frame, a rock lever mounted concentrically upon the stud, a tubular parallel arms for mounting it on the pin, the arms being provided with a contiguous member to clear the latch and provide stops to limit the movement of the carrier.

7. An electric switch comprising a frame provided with a pin, a spring controlled barrel carried by the pin, means for oscillating the barrel, a latch pivoted to the barrel for sliding coaction .with the frame, a blade carrier having parallel armsfor mounting it on the pin, the arms including. a contiguous yoke member bent to forma recess for clearing the latch and to provide stops to engage the frame to limit mcnt of the carrier.

8. An electric switch comprising a frame I provlded with apin, asprlng controlledthe move mounting member carried by the pin, means for oscillating the member, a latch pivoted to the member for sliding coaction with the frame, a blade carrier havin parallel arms for mounting it on the pin, t e arms includ ing a contiguous yoke member bent to form a recess'for clearing the latch and to provide stops to engage the frameto limit the movement of the carrier.

In testimony whereof I have hereunto set my hand in the presence of two subscribing JOSEPH H. RUSBY.

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