US1279964A - Automatic time-switch. - Google Patents

Description

AUTOMATIC TIME SWITCH.

`l`APPLICATION FILED MAY 24, |915.

Pawntd sept. 24,1918.

2 SHEETS-SHEET I.

v Y v ]2 O m W6 v /I H/I/EY rens ca. mmmvumu. wasnmmvn, n c4 MI.H. AVRAM. Automne TIME swlTCH. APPLICATIQN FILED MAY 24. l9l5.

2 SHEETS-SHEET 2.

@gun-mn.'

' Patented Sept. 24, 1918.

UNITED STATES inrENr OFFICE.

Mo's'. wanner New yomQN. Y., AssIeNon .rorsriooiiig .Avanti-fai sLocrm, IN'., or NEW YORK, N. Y., A1 CORPORATION orNEW rolt-K.'4

AUTOMATIC TIME-sW/Irci.

specification of Letters'raient.,` Tattdsijfl 4 Applicationmed-Maya@ 1,915.- -seiarNaegasig To all 'whom' t mag/concern? Beitxknown 'that I, Mo'r's H. AVRAM, ah

citizen ofthe United States, andau'esidentv of New Yorkcity, county, and'Stater of New 'Yorlg have invented cert-ain new andfuseful Improvements in Automatic Time-Switches,

of which the following-is a specification.y h

This invention yrelates to an automatic time switchI of novel construction which is vmore y'particularly designed yto ber used in conjunction with an eiiiciency recorder for 1nachnes,-etc., such as forinstance shown n `length of time asin this way only, a proper energizing' kof Athe electromagnets that form part of Ithe eHiciency recorder, may he relied upon; The invention further comprises other' novel features of construction more fully brought out-inthe appended specification and claims.

In the accompanying drawing, Figure 1 is a face view ofmy improved timesvvitch and cooperating parts;

`Fig. 2 a side view of Fig. 1; Fig. 3 an enlarged view partly in section* ofthe time switch with the cover removed; y Fig. 47a cross section on line l1-1, Fig. 3; .Figo ya similar section on line 5-5, Fig. 3, 'and n Fig-6 -a detail; ofthe feed pawl-controllmg cam.

The casing .of myy improved-time switch comprisesa 'basefplate 10 and a cover 11 dust-tightly secured to saidzplate 'by means ofscrews 12. Intoaperforationof a Vdepressed portion 13 ofplate 10 is firmly driven abolt 14 upon which isgfree to rotate a sleevef'l thelower flange lfof which 1s accommodated within a corresponding recess .17 of'basegplate 10. Sleeve 15 isheld to bolt!v 14 by p means of an adjustable feed paWl-controlling; cam plater 18 hereinafter more fully'referredto,said cambeing secured toplate 10 by means of a screw 19 and engaging flange 16. Sleeve 15 is-` accommof dated lwithin -va corresponding bore 20 of cover 11 and passes-through a vdust-proof stuiing box 21. Upon the protruding angularportion 22 of sleeve 15 is fitted the hub 23 `of alever 24: provided :with a longitudinal` slot .25'. To `lever 24 is adj ustahly 'fclamped `j a block 26 into a perforation 1 of which isf oscillatably ftted abolt 27. TheI head'282 kof tlieflatter r is providedfwith a' transverse='bo1e' adapted for 'the `reception l"of a ibipartite 'rei cip'rocal'rod 29wliich is,.fby clamp"30,-con' nected :to suitable xoscilla'tive :part414 of "the machine to' he controlled.r `In forder" to" prei vent a breakage `of .the .p'artsdescribedin ycasethey a-refnot properlyla'dj usted, afyiellding. `connection is provided between' Vtl-ref clamp 30,l and ileverV 24, which isv showntto tween the .head 28' and :abutrnents .'32 rodea Y p Y The@ Hange f16 aradially extending arm 33 tofwhichis 'pivconsist ofapair of springs 31?interposede-bev of sleevel5J'is providedfvvithl oted a pawl 3L1finfluencedhy a :spring 'that isyattached tUsaidarm. :Spring-35 holds the y pa-wl ,34C f in leng'fagement lvwith ratchet wheel 36 looselylmounted on sleevezlpa springiniiuenced detent 37 preventing? undesired backward rotation' ofthe ratc'het wheel 3G. To the latterisjkeyed orfothelf wise secured a camwlieel 38 showntofloe pioi vided with va pair of diametrically :opposed yteeth 39 although it is ob-i'fio'us thatxitimay'fbe' provided withfa different numberofrsuch" teeth as conditions may;v require.

, y 85 Each of the teeth 39 is'. adapted: to engage the ylaterally protruding: arm f or 4nose of ay plunger .41havingfa stem 42 that. is jslid'- ably supported by a suitable bearingT/JStof` base-p.late*10`.\V IPlu-iigenil is furthermore provided with :a head *orf .piston-44 that slid; f ably engagesa cylinder 45 secured to :.th'e." baseplate 10. Intermediateplunger141 and vancingfthe teeth 39 of cam-wheelmizthe" direction of-"thearr`ow (Fig.- 3).` Inthisf way, the'y tooth 3 9 engaging vnose .40"wi1l" gradually retract ythe plunger 11andipist/0n 141 against the actiongof ,spring'l16, untilthe parts have arrived .in thenpositionfillustrted in 'FigaB, the tooth "39f beingz aboutttoeclear nose .40. As Vsoon-as .the tooth-39. has'n'efj leased'the nose 40, the spring-:46#will'fadvance theplunger 4:1 toWardits initialfpo-y sition which advance movement-isfhowever retarded owingpto the resistance offered by block isin turn secured to base plate 10.`

Contact spring 47 is adapted to be engaged by one arm 50 of a bell crank lever 51 pivoted at52 to plunger 41. The, other arm 53 of this lever is influenced by a spring 54, the play of arm 5.3 being limited by a stop 55 provided on plunger 41. It will be seen that during the advance movement of this plunger which takes place upon the disengagement between one of the teeth 39 and nose 40, arm 50 will bend the spring 47 into contact with the spring 48, which contact will be maintained until the lever-arm 53 engages a fixed stop 56 of base plate 10. Owing to this engagement, the lever 51 will be tilted during the continued advance of plunger 41 so that the arm 50 will slip orf spring 47 and thereby permit the springs 47, 48 to become separated thus again occupying the position illustrated in Fig. 3. s the advance'movement of plunger 41 is considerably retarded owing to the provision of. piston 44 and cylinder 45 it is obvious that the contact established' between the springs 47 48 will be maintained for the desired length of time for reliably closing the circuit (not shown) controlled by said Contact springs. L During the subsequent return movement of plunger 41, thek lever arm 50 will glide by spring 47, a taking along of said spring being prevented by a Xed sto 5 llt) will be seen that by properly setting block 26 the angular play imparted to lever 24Amay be regulated, said langular playin turn determining the angular play of pawl 34 and consequently the number of teeth of ratchet wheel 36 to be engaged during each oscillation of said pawl. To still further control the intermittent advance movement offratchet wheel 36, the hereinabove mentioned plate 18 is provided with a cam portion 58 adapted, to be engaged by pawl '34;

It'will be seen that as soonas this pawl enga gesthe cam 58, it will be lifted out of engagement with ratchet wheel 36. By loosening the screw 19 that passes through al segmental slot 59 of plate 18, the cam 58 may be advanced towardv or retracted from the pawl 34 thereby either increasing or diminishing the number of ratchet teeth adapted to be engaged by said pawl.

I have shown but do notherein claim mechanism to count or record the number of operations of ratchet wheel 36, comprising a toothed wheel 60 lirmly attached to the ratchetJ wheel 36, the number of teeth of said wheel corresponding to the number of teeth on the ratchet wheel. The toothed wheel 60 is engaged by a pinion 61 having ten teeth and secured to the spindle 62 of a counter 63 of convenient construction, the uppermost numbers or said counter being exposed through a window 64 provided in coverll. The squared end 65 or spindle 62 passes outwardly through a suitable dusttight stuiiing box 66', so that it may be engaged by a key for setting the counter to zero. f

Spindle 62 is further provided with a worin A67v engaging a worm wheel 68, that is shown. to be furnished with a plurality of sockets 69. The latter are designed for the receptionr of one or more contact pins '70 adapted to engage a stationary contact 71.v By each engagement between a contact pin 70 and the stationary contact 71, a signaling circuit (not shown) lis closed by means of which the completion of a suitable number of operations, etc., of the machine to-be controlled, may be perceivably announced.

It will be seen that by my novelautomatic time switch the electroma'gnets of the eiliciency recorder Vwith which said switch cooperates, may be reliably actuated.

1. In a device of the character described, an oscillatable member adapted lto be actuated by the machine to be controlled, a spring-iniuenced plunger, means whereby said plunger is adapted to be operated intermittently by said member in opposition to its spring, a pair of contacts adapted to be closed by and during the advance movement of the plunger under they influence of its spring, means for retarding said advance movement of the plunger and means controlled by said plunger but independently actuated for breaking said contact near the end of the advance movement thereof.

2. In a device of the character described, an oscillatable memberV` adapted to be actuated by themachineto be controlled, a. spring-inliueneedY plunger, means whereby saidplunger is adapted to beA operated-intermittently by said member in opposition to its spr-ing, a piston carried by Vthe plunger, a stationary cylinder adapted to be engaged by said piston, said piston and cylinder jointly constitutingmeans for retarding the advance movement ofl thel plungei1 under the'intluence oi." its spring,"

3. In a device of the character described, an oscillatable member adapted to be actuated by the machine to be controlled, a spring-iniuenced plunger, means whereby said plunger is adapted to be operated intermittently by said member in opposition to its spring, a springsinfluenced lever fulcrumed to said plunger, a pair of contacts adapted to be closed by said lever during the advance movement of the plunger under the inliuence of its spring, means for retarding said advance movement of the plunger and means for rocking said ylever near the end of the advance movement of said plunger for breaking said contacts.

Ll. In a device of the character described, an oscillatable member adapted to be actuated by the machine to be controlled, a spring-influenced plunger, means whereby .said plunger is adapted to be operated intermittently by said member in opposition to its spring, a spring-influenced lever fulcrumed to said plungera pair of contacts adapted to be consecutively closed and opened by said lever during the advance movement of the plunger under the influence of its spring, and means for retarding said advance movement of the plunger, said lever being automatically rocked to open said contacts near the end of the advance movement of said plunger.

5. In the device of the character described, an oscillatable member adapted to be actuated the machine to be controlled, a spring-influenced plunger, means whereby said plunger is adapted to be operated intermittently by said member in opposition to its spring, a bell crank lever fulcrumed to the plunger, a stop on the plunger adapted to be engaged by the irst arm of said bell crank lever, a spring for normally holding said lirst arm in engagement With said stop, an additional ixed stop adapted to be engaged by said first arm, and a pair of contacts adapted to be closed by the second arm of said bell crank lever during the advance of said plunger under the influence of its spring, said lever being automatically rocked to open said contacts near the end of the advance movement of said plunger.

6. In a device of the character described,

` an oscillatable member adapted to be actun luence of its spring, means for retarding said advance movement of the plunger, means carried by said plunger for positively closing said contacts and independent means coperating therewith for breaking said contacts near the end of the advance movement of said plunger.

7. In a device of the character described, an oscillatable member adapted to be actuated by the machine to be controlled, a pawl adapted to be actuated by said member, a ratchet Wheel adapted to be actuated by said member, a ratchet Wheel adapted to be actuated by said paWl, adjustable means for varying the number of teeth of the ratchet Wheel to be engaged by the pawl, a cam secured to said ratchet Wheel, a spring-im.

fluenced plunger adapted to be actuated by said cam, in opposition to its spring, a pair of contacts adapted to be `closed during the advance movement of the plunger under the iniiuence of its spring, means for retarding said advance movement of the plunger, means carried by said plunger for positively closing said contacts and independent means cooperating therewith for breaking said contactsnear the end of the advance movement of said plunger.

MOIS H. yAVRAM.

Copies of thin patent may be obtained for ve cent: each, by addressing the "commissioner of Patents,

Washington, D. G.k

Images