US1889210A - Lock - Google Patents

Description

Nov. 29, 1932.

F. W. M FARLAND LOCK Filed April 20, 1951 5 Sheets-Sheet QJLIMW WYggENTOR.

BY Q Nov. 29, 1932.

F. w. MCFARLAND LOCK Filed April 20, 1931 3 Sheets-Sheet Nov. 29, 1932.

F. w. MCFARLAND 1,889,210

LOCK

Filed April20, 1951 s Sheets-Sheet s IIIIIIIIII ATTORNEYS.

Patented Nov. 29, 1932 UNITED STATES PATENT OFFICE FRANCIS WALTER McFAR-LAND, OF MARTINEZ, CALIFORNIA, ASSIGNOR OF TWO THIRTY-SECONDS T BYRON DECKER AND FIFTEEN THIRTY-SECONDS TO RALYH HERSEY, BOTH OF MARTINEZ, CALIFORNIA LOCK Application filed. April 20,

This invention is a lock, and has special reference to a lock for freight car doors, although adapted for any type of door, swinging, sliding or lifting, and is also applicable to use on inner compartments of safes, and is peculiarly adapted for use where it is desired to identify the operators of the lock, which provides an accurate register of all operators 0f the lock and the order of operation, as also -control incorporating a key, a slug and a slide, and in which the slide must first be unlocked by the key, a slug inserted, and the lock released by the same key by cooperation with the slug.

Third, to provide a look as outlined with a counting device to provide a check on the operation of the lock.

Fourth, to provide a separately locked receptacle for the slugs and so disposed and formed as to receive and retain the slugs in the order in which they are deposited.

Other objects and advantages of the invention will become apparentias the following description is read on the drawings forming a part of this specification and in which similar reference characters are used to designate similar parts throughout the several views, and in which:

Fig. 1 is a front elevation of the invention, showing the two cooperating lock elements in locked position;

Fig. 2 is a bottom vlew ofthe invention;

Fig. 3 is a perspective view of the key used for operating the lock; v

Fig. 4 is a plan view showing the interior mechanism in locked position:

Fig. 5 is a section taken on line 5-5 of Fig 4;

Fig. 6 is a perspective view of the slug.

Fig. 7 is a plan view showing the interior mechanism in unlocked position;

1931. Serial 1%. 531,410.

Fig. 8 is a bottom view of Fig. 7 and Fig. 9 is a section taken on line 99 of Fig. 7.

The lock consists of a lock element and a latch element, one of the elements to be mounted on the door and the other element on the cooperating door or casing.

The lock element consists of a housing of inverted bottle shape having body sides 10 and 11 and ends 12 and 13, the end 13 being formed with a neck 14 provided with outwardly projecting flanges 15. The bottom 16 is'secured by any known means, and may be integral with the sides and ends and oonsists of a flat plate formed to the contour of the housing. The lock mechanism is mounted on an intermediate plate 17, the lower edge 18 of which is spaced from the wall 13, and is fixed to or integral with sides 10 and 11 and end 12. Holes 19 are provided for mounting bolts and tapped holes 20 for fastening the cover in place.

A bore 21 is formed in the end of the neck 14 to receive a lock 22 of the Yale type, V

which is provided with pins 23 adapted to engage in recesses or a groove 24 formed in the neck. A slot 25 slidably receives the slug slide,'and a slot 26 is adapted to clear the swing of the latch. The cover 27 is of similar form to the bottom 16 and is provided with a slug opening 27, a key hole 28, mounting bolt holes 29 in registry with holes 19 in the bottom, a sight opening 30 for the counter and another opening 31 for the last operated slug. The key hole 28 is provided with a spring centered cover 32 pivoted at 33, and the opening 31 is provided with a magnifying glass 34 suitably mounted in a frame 35; gib 36 cooperates withthe slug slide.

The latch housing consists of a substantially rectangular casing 37 having a bottom 38, a slot 39 being formed in one side to clear the swing of the latch, and a recess extending 1 The cover is provided with mounting holes 46 in registry with holes 42 in the bottom, and the covers are suitably fastened by means of screws 47. An arcuate slot 48 clears the swing of the operating knob on the latch arm, and the cover is so formed as to cover the latch arm throughout its swing.

The slug 49 consists of a disk of metal or hard composition and provided with a groove 50 formed ofi' center so the slugs can only be inserted one way, and have identifying marks and serial numbers as indicated at 51 on the face opposite groove 50.

The slug inserting device consists of a slide portion 52, integral with a body 53 and a superposed spaced cover 54. A ridge 55 cooperates with the groove 50 in the slug, and a pin 56 prevents the slug from being misplaced at time of insertion. 57 is slidable under a gib 58 and prevents withdrawal of the slide. A knob 59 provides for convenient operation of the slide. A locking groove 60 is formed in the bottom edge of the body portion 53.

The slug slide locking device consists of a leaf spring 61 pivoted at 62, the pivot being adjustable toward or away from the slug slide by means of the adjustable block 63. A pin 64 cooperates with the upper portion of the spring, the end of which engages in the slot 60 slide 54.

The slug chute 65 has a ridge 66 in alignment with the ridge 55 when the slide 54 is closed and a recess at the bottom for reception of the counter arm. Blocks 67, 68 and 69 function as additional guides for the slugs 49. A block 70 has a transverse slot 71 in which a retention spring is adapted to retract on passage of a slug and which consists of a length of spring wire 7 2 secured in the housing at one end, the other end being bent upwardly to present a broader surface to the slug.

A key pivot 73 is adapted to cooperate with the aperture 74 in key 75, the key being stepped at 76 to clear the ridge 66.

The pawl 77 is pivoted at 78 and has teeth 79 adapted to engage the latch, and is urged by a spring 80 into the path of the slugs, and is arcuately formed at 81 to cooperate with the periphery of the slug 51.

A roller 82 is adapted to cooperate with the back of the latch member. A ratchet type counter 83 is operated through a lever and link system 84 in combination with a shaft 85 which is mounted in bearings 86 and has an upwardly extending arm 87 adapted to be engaged by the slugs as they are forced past the spring 72 and into the cup 88 in which the slugs are deposited and which is removable by unlocking the lock 22 and withdrawing the cup with the lock.

The latch consists of an arcuately formed preventing withdrawal of the toothed member 89 adapted to cooperate with A tongue the teeth 79 on pawl 77, the inner side 90 cooperating with the roller 82 as shown in Fig. 4 and being pivoted at 91, having an en gaging arm 92 adapted to cooperate with a spring urged plunger 93 which isslidably mounted in bearings 94 and urged by the spring 95, and also having an operating arm 96 provided with a knob 97 which projects through the arcuate slot 48 in the cover. A

spring pressed ball 98 cooperates with the in ner edge of the latch whereby thelatch is retained in the position shown in Fig. 7.

The cover 45 is provided with a cleat 99 which is adapted to cover the crack between the two elements when closed together.

The operation of the device is as follows: The lock element and latch element are mounted on two cooperating door members by through carriage bolts, the square under the head fitting into the rectangular apertures 29 whichwill prevent removal of the bolts from the outside.

To look, it is only necessary to swing the latch arm 96 from the position shown in Fig. 7 to that shown in Figs. 1 and 4, whereby the ratchet section of latch 89 engages the teeth on pawl 77 which assumes the position shown in Fig. 4, and being urged by the spring 80.

To unlock the device, it is first necessary to insert the key Fig. 3 in the key hole 28, turn the key contraeclockwise whereby the key depresses spring 61 between the pivot 62 and pin 64 which causes retraction of the end of the spring from the slot 60, releasing the slide 54 which is then drawn to the left by means of knob 59, exposing the opening 27; through which a slug 49 is inserted the groove 50 fitting over ridge 55, and pin 56 preventing the placing of the slug in the wrong position. The key is released and the slide pushed back to its original position, being automatically locked by cooperation of the end of spring 61 with the groove 60, the slide also preventing dust, cinders from entering the lock or preventing tampering and insertion of tramp material or slugs. As the slide is pushed back and ridge 55 reaches alignment with ridge 66, the slug 51 slides down to the position shown in Fig. 4 being stopped by the arcuate recess 81 in pawl 77. By turning key 76 clockwise the slug 51 is forced down, coincidently forcing pawl 77 back as shown in Fig. 7, releasing the latch 89. Spring plunger 93 urging against the projection 92, throws the latch about its pivot 91 to the position shown in Fig. 7 and is engaged and retained in this position by the spring pressed ball 98. As the slug 49 is forced past the end of the pawl 77, the pawl returns to the position shown in Fig. 4 and the slug is stopped by the upturned end 100 of spring 72 and retained until the next opening of the lock. and causes the next inserted slug 49a to force the previous slug 49 past the end 100 of spring 72 which is forced into the recess 71 thereby, slug 4 engaging the lever arm 87, forcing it downwardly, which through the shaft and link and lever system 84 operates the counter 83, increasing by one number as indicated by Fig. 4 and Fig. 7. Slug 49 drops into the receptacle 88 and arm 87 returns to the position shown in Fig. 4, being resiliently urged, the slug 49a occupying the position last held by slug 49. The receptacle 88 is removed only by autho 'ized persons who have a special key to fit the lock 22, which is removed with the receptacle 88 from the lower end of the housing, the slugs being deposited in order. The last slug used for opening the lock is visible through the opening 31, the glass 34 enlarging the view of the characters so as to make them plainly readable, thereby providing an individual check on who last opened the lock.

Having described an operable method of constructing and using the invention, it will be noted that variations in construction and arrangement of parts which are consistent with the appended claims may be resorted to without detracting from the spirit or scope of the invention or sacrificing any of the advantages thereof.

I claim 1. A look, in combination, a latch housing, an arcuate latch pivotally mounted therein and having an integral operating arm, and ratchet teeth formed in the outer periphery, a lock housing having an opening for reception of said latch, a pawl pivotally mounted therein and adapted to cooperate with said latch, a slug guide in cooperative relation to said pawl, said pawl having means to support a. slug, and said lock housing having an aperture for the insertion of a key whereby an inserted key may engage a slug supported by said pawl to release said pawl from said latch.

2. In combination with a combined key and slug operated look; a slug slot, and a cover therefor, means for automatically locking said cover in closed position, said means being releasable by a key used for operation of said lock.

3. In combination with a combined key and slug operated lock having an aperture for the insertion of a key, a slug slot, a cover for said slot, a guide integral with said cover and having slug positioning and retaining means thereon, means for automatically locking said cover in closed position, said means being releasable by a key.

4. In combination with a combined key and slug operated lock having slug guiding and key positioning means; a slug inserting device comprising a slide, slug positioning means on said slide, a cover integral with said slide, a groove in one edge of said slide, a retractible spring in cooperative relation to said key positioning means and adapted to cooperate with said groove for locking said slide'in closed position, said "cover being adapted toclose a slug slot, said slug positioning means on said slide being. in alignment. with said slug guiding means when said slide is in closed position.

5. A look, in combination, a lock housing provided with a key receiving aperture, a latch housing, a pivoted latch insaid latch housing and having an arcuate arm adapted to enter an opening in said lock housing and to cooperate with locking means therein, an operating arm on said latch, a pawl in said lock housing adapted to engage said latch, a slug guide in operative relation to said pawl, adapted to guide a slug for release of said pawl by cooperative action with a key, a resilient member for retaining a slug following release of said pawl, a registering device, means interposed in the path of travel of a released slug for operating said registering device, a slug slot, a cover for said slot integral with a slide, a guide on said slide adapted to register with said slug guide, resiliently actuated locking means for said guide, releasable by a key inserted in said key receiving aperture.

6. A look, in combination with a latch and combined key and slug releasable engaging means therefor, a slug inserting device and automatic locking means therefor, a slug guide in cooperative relation to said engaging means, key positioning means in cooperative relation to said inserting device locking means, and to said slug guide, a sight aperture in registry with said slug guide, resilient slug retaining means in cooperative relation with said guide, a registering device, and slug operated means in cooperative relation to said slug guide for operating said registering device, a sight aperture for said registering device, and an individually locked slug receptacle adapted to receive the slugs following operation of said registering device.

7. In combination with a combined key and slug operated lock, having a slug guide in cooperative relation to a releasing member, key positioning means in cooperative relation to said guide; a slug inserting device comprising a slide disposed beneath a slug receiving aperture, a cover integral therewith and adapted to close said aperture, slug positioning means on said slide adapted to register with said slug guide when in closed position, and automatic means in cooperative relation to said key positioning means for locking said slide in closed position.

8. A look, in combination, a lock element and a latch element, a resiliently retracted latch member pivotally mounted in said latch element and provided with peripheral ratchet teeth and adapted to swingably enter said lock element, a pawl pivotally mounted in said lock element and adapted to cooperate with said latch member, slug guiding means in cooperative relation to said pawl, an operating arm on said latch member for manually locking said latch member in engagement with said pawl, said pawl being releasable by means of a key cooperating with a slug retained by said pawl.

In testimony whereof Ihave aflixed my signature.

FRANCIS WALTER McFARLAND.

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