US858040A - Time-switch. - Google Patents

Description

No. 858,040. PATENTED JUNE 25, 1907.

` A. TRESSBM.

TIME SWITCH.

,APPLIATIDN FILED JAN.23,1907.

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ALVINTRESSELT, or NEW YoRK, N. Y.

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Specification. of Letters Patent.

Patented Jane 25, 1907,

Application nea Jaimy 23,1907. serai Naaafa L filza fait 'whom t may concern/ 5 iie it known that i, A Lv'lN TRnssnLT, a/citici the United States, residing in the city ci ilew'Ycrl, borough of Brooklyn, il". the 5 cennty of Kings andState of New .York, have in Time-@witches aspeciiication. inv-estaran relates to time-controlled di which the ollowating the sw1tch,' and a time h will accurately control mechanism the whole being action and operation, and ar- Jther mechanism, and also easily removed for inspecf Without affecting the others.

whereby the ahcve objects are attained, to be herenia'ter described.

Tbe-accempanying drawingsfor'ma part cf'vthia epecihcation and show a preferred c vferm. ci the invention.

i is a face yvlew of the mechanism, l

ccrrespnnding side view. ci a portion of the switch-op- ...sm on a larger scale, and Fig. showing another portion of 1 ci? reference indicate the s the iigures. l

inechains. d' for the `purposes of this de scripticn may be 'understood to be avrectanguiar be' of ircn having a cover A1 which may be seal when cicsed by a rubber gasket as nasal..

l" n n c tm i snai -siebve B? isms" that they .nted a certain new and useful Im rove. dicated there.. y at which the switch is to be turned to the on and off conditions.

y and attached to the frame of the clock mechs'witches, and the object n is to provide efficient mech- The inventien consists in certain novelv features ci: ccnstrnction and arrangement @eine ease bein shown in section.

the switch' and other sf; and hears two sets of numerals or.. 1 t hin/*ing the hour-train -B'-arf;

' iai B? once mjtwenty" two cams B4 B5 revolving with the dial and held adjustably-in place thereon by a spring washer B" and nut B7. The ends of the cams reach nearly to the divisions on the 'dial so v be easily set to the times in- -which is in mesh with a pinion C3 on a shaft C4 extending through the upper Cplate of the frame and carrying` an arn'i N 5 is a wh eel loosely mounted on the shaft C* but compelled to turn in one direction therewith by 7 5 the-engagement of a ratchet-wheel C thereon, by a awl C7 carried on the wheel. From the whee C5 extends a trainto any()8 serving to -slow the movement of the arm N.

A standard C9 on the upper or outer plate serves as a fulcrum forl a lever M extending approximately to a line at the transverse diameter of the dial and terminating in a iinger M1 lying in the path of the cams. The opposite endof the lever has two branches M2 M3 resembling the pallets of the well-known escapement anchor. The branch M2 lies'in the path of the arm N and holds it until the .nger M1 has been forced .outwardly far enough to release it; the saine' movement places the branch M3 in the path and again arrests and v. holds it until theiinger Ml passes the outer end of the camandl again moves inwardly. Thus freedthe arm N completes its revolution and is again stopped bythe branch M2. 95

The short movement of thearm between the branches M2 M3 is ineffective eXce It in prenari-,g lfor thelong sweep from t e branch 'vla tf, the branch M2.

D :is the switch, shown as a ,Perlins 4--1oo pole.;` comprising a porcelain or other non-- l iiond'aicting basesec'uredfto' the casing A, and cov D1 nclosing the fixed and moving contacts. lt'is of the sprino' typein Which'by the rotation of a central shatt D2 a spring D3, 105 vnot iully shown7 is 'partially wound'and ref leased, the tension' thus created serving to' throw the switchinstantaneously to the cn o .condition'asindicated -by the'a' 1 anceof 'suchword in awindow d-in t e lrre l -Dla v 'On'theshaftD? i meent a gea-rwvheelin mesh with the liarrelewl'ieel C ol the switele(ipcrating mechanism, and so pro 'portim'icd relatively to the latter that one con'ipletc circuit ot the arin N will induce a f,- partizil :revolution Aol the shaft 1.)2' .sullicicn.v to throw the switch. One full reiuilution of' the wheel l induces tour (,:hangcs oi the switch, aiul the condition ol the latter niay be secu through one or the other oi the opcnings d in such wheel as it is presented in coincidence with the window d, the gearing being so proportioned as to induce such co incidence when the arm N is arrested by the branch M2. The upper end of the shalt or I5 switcl'1-stem .U2 is supported by a Vshaped brace D5 removably secured to the outer plate of the tclnopcrating mechanism (d, In the branch lil.2 ot' the lever M is a notch m receiving a fixed stud (31 serving to reinforce the standard C by taking a ortioncf the strain caused by the action of t 1e arm N,

al d especially in resisting'the force 'of the blow delivered by the arm at the completion ot its revolution. The end ofthe arm N and 2.5,'the ,outer face of the branch M2 with which it contacts are curved on a segmental line of which the standard C9 is the center, so that the friction due to pressure is practically constant for all positions of the lever M, andy 3o therefore the effect of the latter upon the clockmovement is nearly uniform.

M4' is a light helical spring coiled about the standard. C and exerting its tension in the direction to force the lever M toward the center of the dial and insure the inward movement when the finger M1 passes 'the point or" either cam. Both cams are alike, one serving to turn the switch to the on position and the other to the of"; by seta 4o ting them to the desired times as indicated by the dial the changes will be made automatically.

TheV driving-spring in the barrel C1 is of suiiicient strength to overcome the switch spring-Da at each throw. The elect is to cushion the blow delivered to the branchll/l2 by the arm N. In making its revolution the arm passes the short distance between the branches idly and on leavin the branch 5c M3 starts with the full force o? the barrelspring resisted by the flytrain and by the gradually increasing opposition of the switchspring until the' release-point of the latter is'reached, which occurs just prior to con- 5 5 4tact ofthe arm and branch M2 5 thusit will be seen that the arm travels with full force' only through a short arc and is arrested before any considerable momentum is ac quired. The ratchet-Wheell C and pawl C7 6o 'in the fly-train permits suoli train 'to continue te aft -r the 'arm been arrested, thas avoiding shock to the mechanism due to sudden stoppage. y

In the-apparatus ashore described the 6,: spring in the barrel'C1 is strong enough to.

throw the switch sixteen rimes, which is assumed. to be requisite for the eight days run ol" the clock movcment,--that is one on and one ollJ movement in each twentyfour hours, for controlling an electrically 7o` illuminated sign. or the like.

'Vo remove the time mechanism it is only necessary to release and lift oil' the lever M and remove the screws holding the move ment to the case. 'lhc switch-operating 75 mechanisn'i ina be removed by simply' taking out the ho ding screws, and the switch may be removed or inspected by taking away the brace D and removingr Kthe gearwheel D, thus exposing the cover Dl and "8o permitting the switch to be detached in the usual manner. It will be noted that either of these operations may be performed without disarranging the other mechanisms.

I claim. l 85 l. In a time-switch, -a time-movernsnt, a switch, and a switchmpeirating mechanism, each independent of the others and each removable independently of the other, a cam moved by'said time-movement, alever in the 9o path of said cam, connections from said switch-operating mechanism to said-switch for actuating" the latter, an arm revolved by said switch-operating mechanism, fand branches on said lever arranged in the path of said arm and constructed to arrest and re lease said arm and means operative after the movement of said arm has ceased and constructed to retard the movement of said arm.

2. In a time-switch, a switcli-operating mechanism, an arm revolved thereby, means for arresting and releasing said arm, a ilytrain operatively connected with said arm `-tor retarding the movement of said arm,

means permittin said arm to travel with full force throng a'short arc only and a ratchet-wheel and pawl in said fly-traincon# structed to permit said ily-train to run` by momentum after said arm has stopped'. 8. In. a time-switch,A a switch having a spring, and .a switch-operating mechanism controlled by the movement of an arm thereon in opposition to said spring, and meansl for tempering the force-oisaid arm and means for arresting said armj'after-iemrev..115 lease of' said spring and the movemeltbofsaid switch and permitting said arm to travel withv full lforce through a short arc on y.

IIO

4. In a time-switch, a timemovement-W a izo' switch, and a switch-operating mecl'uinism,l each independentof the others andeach'removable ln'dependently of the other, a dial revolved by said time-:movemencams'revolving With'said dial and adjustable relah tively thereto, a lever having a finger :in the path of said cams, branches on said lever, an arm revolved by said switch-operating mechanism and arrested and released by said branches,l means permitting said arm to 1.39

travelwithull force through a short are only and connections from said switch-operating mechanism to said switch for actuating the latter. f

5. In a time-switch, a time movement, a

switch and an interposed Switch-o erating mechanism, en arm operated by sai switch- 0 erating mechanism, means operative after t e movement o f said arm has ceased and constructed to retard the movement of said arm, cams on the dial of the time movement,

above set forth'I aiiix my signature, in pres-v .ence of two Witnesses.

ALVIN TRESSELT.

1Witnesses: CHARLES R. SEARLE, F. E. EGOAROF.

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