US994623A - Combined multiple fuse-block and switch. - Google Patents

Description

. P. E. WESTERDAHL comamzn MULTIPLE rusn BLOCK AND SWITCH.

APPLICATION FILED D30. 1, 1910.

- Patented June 6, 1911.

2 SHEETS-SHEET L.

gxm m PEWisZkniafiL .3 m =2 I, 541 I I m album P. E. WESTERDAHL. COMBINED MULTIPLE FUSE "BLOCK AND SWITGH.

ABPLIOATION 11mm no. 1, 1910.

Patented June 6, 1911.

2 SHEETS-SHEET 2.

flmmm UNITED STATES PATENT OFFICE.

PER ENOGK WESTERDAJFIL, 0F SEATTLE, WASHINGTON.

COMBINED MULTIPLE FUSE-BLOCK ANDSWITCH.

To all whom it may concern:

Be it known that I, PER ENOCK WESTER- DAHL, a citizen of the United States, residing at Seattle, in the county of King and State of Washington, have invented certain new and useful Improvements in Combined Multiple Fuse-Blocks and Switches; and I do declare the followin to be a' full, clear, .and exact description of the invention, such as will enable others skilled in he art to which it appertains to make an use the same.

This invention relates to improvements in a combined rotary multiple fuse box and switch.

One object of the invention is to provide a combined fuse block and switch of this character having an improved construction andarrangement of fuse supporting mechanism by means of which the fuses are firmly held in position and may be successively brought into engagement with spring contact terminals, thus providing for the quick and easy renewing of the fuses when any of the same have burned out.

Another object is to provide means for holding the fuses against casual engagement with the contact terminals when the switch is open.

A further object is to provide a combined switch and fuse block of this character which will be simple, stron and durable in construction, eflicient an reliable in operation and welladapted to the purpose for-which it is designed.

Withthe foregoing and other objects in view, the invention consists of certain novel features of construction, combination and arrangement of parts as will be more fully described and particularly pointed out in the appended claims.

In the accompanying drawings: Figure 1 is aside view of my improved .fuse block and switch showing the same in closed position; Fig. 2 is a side view with the parts broken away showing the switch in open position; Fig. 3 is an end view thereof; Fig. 4c is a central longitudinal sectional view; Fig. '5 isa vertical cross-sectional view on the line 5-5 of Fig. 1; Fig. 6 is a detail perspective view of the locking washer for holding the switch in an open position; and,

Fig. 7 is a similar view of the spring locking pawl for holding the switch 1n open positlon.

Referring more particularly to the draw- Specification of Letters Patent.

Patented June 6 1911'.

' Application filed December 1, 1910. Serial No. 595,090.

ings, 1 denotes the base or supporting plate of the switch, said plate. being formed of porcelain, slate or any'other non-conducting material. Secured to the plate 1 are pairs of spring contact terminals 2 which are in the form of spring metal plates or strips bent upon themselves'into substantially U.- shape or form and having their upper ends extended inwardly and bent or curved outwardly to form concaved contact heads 3 which are adapted to be engaged by the ends of the fuses as will be hereinafter more fully described. The contact terminals 2 r are provided at their looped outer ends with terminal or binding screws 4 with which are connected the terminals of the conducting.

wires for the circuits. In the looped lower ends of the contact terminals are also arranged fastening screws or bolts 5 which are inserted through the base 1 and securely hold the spring contact terminals in position.

On the base 1 between the pairs of contactterminals 2 are secured upwardly projecting bearin standards 6 in the upper ends of which 1s revolubly mounted the supporting and operating shaft 7 of the switc Fixedlymounted on the shaft 7 between the upper ends of the standards 6. isa fuse supporting block 8 which may be of any suitable shape but is preferably cyllndrlcal. On the opposite endsof the block are formedsquared extensions 9 with which are engaged washers 10 and 11. The block 8 and washers 11 are formed of any suitable insulating or non-conducting material.

In the opposite ends of the block 8 are secured pairs of spring fuse holding clips 12, said clips being at equal'intervals around the block and havmg their outer ends pro ect1ng radially therefrom as shown. The clips 12 are preferably formed from a single str1p of spring metal bent midway between its ends to form a loop shaped block engagmg shank 13' and outwardly curved fuse engaglng fingers the terminals or outer ends of which are bent outwardly at a slight angle, as shown at 14, to facilitate the engagementlof the fuses with the fingers. The loop shaped shanks,

clips holding the fuse blocks. Secured to the base 1 adjacent the notched end of the washer 10 is an upwardly projecting spring locking pawl 16 the upper end of which is bent inwardly to form a tooth 17 which is adapted to spring into engagement with the the fuses are disengaged from the terminals,

said blocks being thus held against turning and the fuses from being casually engaged with the terminals thus holding the switch in open position.

One end of the shaft 7 is extended a suitable distance andhas arranged thereon any suitable form of switch operatin knob or handle 18. The fiises 9 may be 0 any suitable construction and adapted to be sup ported by the clips and to be engaged with the spring contact terminals as hereinbefore described.

From the foregoing description taken in connection with the accompanying drawings, the construction and operation of the invention will be readily understood Without requiring a more extended explanation. Various changes in the form, proportion and the minor details of construct' 11 may be resorted to without departing rom the principle or sacrificing any of the advantages of the invention as defined in the appended claims.

Having thus described my invention, what I claim is: p 1. In a combined switch and fuse block of the character described, a base, contact terminals arranged on said has a revolubly mounted fuse supporting bk ok, means on said block to hold a series o fuses whereby the latter are successively brought into and out of engagement with said nals and the switch thus opened and closed and, means to lock said switch in openposition thereby holdin the fuses from being casually enga' ed witthe terminals.

2. In a com ined switch and fuse block of the character described, a. base, pairs of spring contact terminals secured to said base,

a revolubly mounted supporting shaft, a fuse supporting block secured to said shaft, fuse holding clips secured to said block whereby the fuses carried by said clips are .bent upon themselves to form 100 attaching shanks adapted to be driven mto contact termi-' adapted to be successively brought into and out of engagement with said spring contact terminals and the switch thus opened and closed, and a spring locking pawl adapted to lock said block against movement when turned to a position wherein the fuses are out of engagement with the terminals there by preventing the casual contact or engagement of the fuses with the terminals.

3. In a combined fuse block and switch, a base plate, pairs of spring contact terminals arranged on said base plate, supporting standards secured to said plate between said terminals, a shaft revolubly mounted in said standards, a fuse block fixedly mounted on said shaft, a series of fuse holding clips arranged on said block and adapted to detachably secure a series of fuses thereto, washers arranged on the opposite ends of said block, one of said washers having formed therein an annular series of locking notches, one of which is arranged o posite the center of the space between said use holding clips, and a spring pawl secured to the base and adapted to be engaged with said locking notches whereby the switch is locked in an 0 en position and the fuse held against casua engagement with said contact terminals. L

4. In a combined fuse block and switch, a base plate, pairs of spring contact terminals secured to said base, a revolubly mounted fuse block arranged between said terminals, fuse holding clips arranged on said block, said clips comprlsing strips of spring lineta s a e the opposite ends of the block and outwardly projecting curved fuse holding fingers, washers secured to Lthe opposite ends of said block, one of said washers having formed in its outer end an annular series of locking notches, one of which is arranged opposite the center of each of the spaces between the fuse holding clips on the block, and a spring pawl secured to the'base plate and having on' its upper end a tooth adapted to engage the notches in said washer and to thereby lock said block against turning when ,the switch is open and the fuse against casual engagement with said contact terminals In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

P. ENOCK WESTERDAHL. Witnesses:

F. W. PARRISH,

C. PAKRISHL-

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