US790659A - Latch and lock. - Google Patents

Latch and lock. Download PDF

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US790659A
US790659A US1904215751A US790659A US 790659 A US790659 A US 790659A US 1904215751 A US1904215751 A US 1904215751A US 790659 A US790659 A US 790659A
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bolt
latch
case
lock
bar
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Charles Austen Prescott
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    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B55/00Locks in which a sliding latch is used also as a locking bolt
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00Locks
    • Y10T70/50Special application
    • Y10T70/5093For closures
    • Y10T70/5155Door
    • Y10T70/5199Swinging door
    • Y10T70/5372Locking latch bolts, biased
    • Y10T70/5385Spring projected
    • Y10T70/5389Manually operable
    • Y10T70/55Dogged bolt or connections

Definitions

  • This invention relates to insertible or mortise locks adapted to serve the dual purpose of a door lock and latch, and has for its objects to provide novel details of construction for a combined door lock and latch which are simple, compact, durable, and inexpensive and thatadapt the same for convenient application upon a door Without requiring a large mortise to be made therein.
  • Fig. 2 is a longitudinal sectional view of the improvement mounted on a door, taken sub- Fig. 3 ⁇ is a sectional plan view substantially on the line 3 3 in Fig. 1.
  • Fig. i is an enlarged sectional side view of details of the lock and latch,
  • FIG. 5 is a sectional plan view of the lock mechanism, taken substantially on the line 5 in Fig. 4.; and Fig. 6 is a detached perspective view of a toothedhub-block employed as a detail of the latch mechanism.
  • the body of the latch-bolt 8 which is adapted to neatly slide therein, there being a radial flange 10a formed or secured upon the end of the case 10 wherein the bolt 8 reciprocates, the flange 1()a being fixed upon a face-plate 10h, which in service is secured upon the free edge of a door-stile A, as will hereinafter be further explained.
  • the slots in each rack-bar are widened toward the inner sides of said rack-bars by bevelfacing the sides of the rack-teeth c that arev lmounted, which'is positioned within the case 10 and by its engagement with the spindle 11 is held for rotation or rocking movementfnear the rear or inner ends of the rack-bars 9.
  • a set of three teeth e project radially from the periphery of the hub 12, and these teeth are so spaced apart and have such a length and relative positions forward of the axis of the hub and spindle 11 that when the spindle is rocked on its supports to be described in either direction the teeth will enter the slots Hin the Iocrack-bar toward which said teeth are turned and engage successively with the rear side of the rear slot and with the cross-bars or teeth c, thereby pulling the rack-bar and latch-bolt 8 rearward.
  • a diametricallyreduced bolt extension 8b is formed or aliXed centrally, which is of a length that will not interfere with the reciprocation of the latch-bolt, and upon the extension 8b an end portion of acoiled spring 13 is mounted.
  • an abutment-bar g is secured by its ends in the wall ot the case 10 across its axis, and upon the front side of the abutment-bar g the shoe g', that is mounted upon the rear end of the spring 13, seats.
  • the shoe g' is formed of a plate-metal strip bent into a rectangular loop, the flat 'transverse member g2 of which engages the abutment-bar.
  • the diameter ot' the spring 13 and thickness of the spaced members of the shoe g', that embrace the rear portion of said spring, is such that they together have lateral support from the rack-bars 9 they are positioned between, so that the latch-bolt 8, which is normally pressed outward and has its nose 8u projected exterior of the face-plate 10b, may be pressed into the case 10 against stress of the coiled spring 13 or be drawn therein, if the spindle 11 is rocked in either direction a sufficient degree to cause the teeth e to successively engage the cross-bars or teeth c that are on the rack-bar toward which the spindle is rocked.
  • a case for holding in proper relative positions the working parts of the lock consists of two substantially similar half-sections 14, that are essentially L-shaped in cross-section and have contact at diagonally-opposite side edges, these case-sections being held together by a clamping-screw L. (Shown in Fig. 2.)
  • the closing end walls 14L of the case are curved into nearly semicircular form, as is indicated in Figs. 2 and 4, and, as shown in Fig. 1, two opposite side walls of the lock-case are thickened in their normally upper portions, said side walls being parallel with each other, as shown at z' in Fig. 5.
  • a circular opening ic is formed that is axially parallel with the sides t' or' the case and central between them, this opening l receiving the inner end of the latch-bolt case allel sides, is pivoted near its normally upper end upon a side wall 71 of the lock-case near the case-wall 10, as shown at I in Figs. 2 and 4, and in the edge ot' the pendent tumbler-bar that hangs in loose contact with the inner vertical side Wall of the abutment-block v/ two spaced notches m are formed.
  • a locking-bolt 16 that coacts with the bar 15 to lock the latch-bolt 8 from complete retraction, comprises an elongated slab of metal having such thickness as permits it to slide loosely in the space between the tumbler-bar 15 and the opposite case side wall t', the edges or' the locking-bolt near its center of length ha ⁇ v*ing a loose contact with the inner tace oi' the abutment-block c" and the side wall of the case that is opposite to and parallel with said face, as is clearly shown in Figs. 2 and 5.
  • a locking-nose o on the slidable bolt 16 is positioned' directly opposite and near to a suitable opening 0, that is formed in the side ot the latch-bolt case 10 behind and near to the rear ends ot' the rack-bars 9.
  • a plate-spring 17 secured by one end upon a side of the lock-case occupying space in the case behind the tumbler-bar 15, contacting with its free lower end upon the corresponding portion of said tumbler-bar, as shown in Figs. 2 and 4.
  • a V-shaped notch p formed in the edge ot' the lockingbolt 16 near its lower end, which permits a key a of proper form, that ispassed into either keyhole a, to engage with either sloped edge of the notch and slide the bolt, so that its nose 0 will be pressed into the hole 0/ or be withdrawn therefrom in accordance with the drection in which the key u (shown in dotted lines in Fig. 4) is turned.
  • a circularly-walled perforation?a is formed in the edge of the door centrally and of a suitable depth to permit the complete insertion of the case 10 therein, said perforation being counterbored at the outer end to produce a shallow recess wherein the radial flange 10a and face-plate 10b are embedded andsecured by screws s, as shown in Fig. 2.
  • an open recess t is formed of a depth and marginal shape which will permit the case for the lock to be embedded at the center of thickness of said stile, as appears in Fig. 1.
  • Two escutcheon-plates 18 of suitable form and dimensions are provided as coverings for the recess or opening in the door, these plates being fixed in place by screws or similar means.
  • a keyhole u is formed in each escutcheon-plate 18 opposite a respective keyhole@ in the lock-case, so that an appropriate key may be inserted therethrough for operating the lock.
  • a circular hole is formed in each esc'utcheon-plate 18, through whichvthe spindle extends outward, and in each of said holes a thimble 19 is secured that is loosely mounted upon the end of a shank 11c of a door-knob 11a, and, as shown in Fig.
  • said Shanks are centrally perforated for the reception of the ends of the spindle 11, said ends being held in place within the knobs by pins o, thatpass through the knob-Shanks and likewise through notches formed in the angular edge of the spindle, said pins being Ainserted through opposite perforations in the thimble 19.
  • projections 03 are formed -at the rear end of the tubular casing lO'and project toward each other and serve las abutments whereon the rear rends of the rack-bars 9 may impinge and prevent them from passing out of the rear end of the casing at any time.
  • Adoorlatch and lock comprising alatehcase having an opening in one side at its inner end, a spring-pressed latch-bolt in the case and having rearwardI v-extending rack-bars rigid therewith, a knob-spindle mounted in the case, a toothed hub on the spindle, a lochcase having an opening at one end to receive the latch-case, a pivoted and spring-pressed tumbler in the lock-case, a sliding bolt also in the lock-case and provided with a nose adapted to project into the latch-case in rear of one olE the rack-bars of the latch-bolt, and an interlocking connection between the bolt and tumbler to hold the former in either position to which it is moved.
  • a door latch and loch comprising a latchcase having an opening in one side at the inner end, a spring-pressed latch-bolt in the case and having oppositely-arranged and real'- wardly-extending bars, said bars being rigidly secured to the bolt and provided with openings forming teeth, a knob-spindle mounted in the case, a toothed hub on the knob-spindle, a lock-case having an opening at one end through which the latch-case projects, a pivoted and spring-pressed tumbler in the lochcase, said tumbler having its 'lree end reduced and provided above its reduced end with spaced notches, and a sliding ⁇ bolt in the lochcase and provided with V-shaped notch at its lower end and with a toe adapted to cuter either of the notches oi the tumbler.

Description

10.790,659. l PATBNTED MAY2s,19o5. o. A. PRESGOTT.
LATGHVAND LOCK.
APPLICATION FILED JULY 8,1904X H By y `stantially on the line 2 2 in Fig. 1.
UNITED- STATES Patented May 23, 1905.
CHARLES AUSTEN PRESCOTTOF VICTORIA, CANADA.
LATCH AND LOCK. i
SPECIFICATION forming part of Letters Patent No. 790,659, dated May 23, 1905.
l Application filed July 8, 1904. Serial No. 215,751.
To all whom, 15 morgana/067%:
-Be it known that I, CHARLES AUsTEN Pans-` Co'rT, a subject of the King of Great Britain, and a resident of Victoria, in the Province of British Columbia and Dominion of Canada, have invented a new and Improved Door Latch and Lock, of which the following is a full, clear, and exact description. Y
`This invention relates to insertible or mortise locks adapted to serve the dual purpose of a door lock and latch, and has for its objects to provide novel details of construction for a combined door lock and latch which are simple, compact, durable, and inexpensive and thatadapt the same for convenient application upon a door Without requiring a large mortise to be made therein.
The invention consists in the novel construction and combination of parts, as is hereinafter described, and defined in the appended claims.
Reference is to be had to the accompanying drawings, forming a part of this specification,
in which similar characters of reference indilatch, substantially on the line 1 1 in Fig. 2.
Fig. 2 is a longitudinal sectional view of the improvement mounted on a door, taken sub- Fig. 3 `is a sectional plan view substantially on the line 3 3 in Fig. 1. Fig. iis an enlarged sectional side view of details of the lock and latch,
showing the lock-bolt thrown and details of the lock correspondingly adjusted. Fig. 5 is a sectional plan view of the lock mechanism, taken substantially on the line 5 in Fig. 4.; and Fig. 6 is a detached perspective view of a toothedhub-block employed as a detail of the latch mechanism.
the body of the latch-bolt 8, which is adapted to neatly slide therein, there being a radial flange 10a formed or secured upon the end of the case 10 wherein the bolt 8 reciprocates, the flange 1()a being fixed upon a face-plate 10h, which in service is secured upon the free edge of a door-stile A, as will hereinafter be further explained.
There'is proper length given the case 10 to adapt it to receive other details of the latch and also permit the latch-bolt 8 to freely reciprocate therein when given full throw for its locked adjustment or release and likewise for the reciprocation of the rack-bars 9. In the rear portions of the rack-bars 9 a series of spaced slot-openings bis formed in each bar, these transversely-disposed slots leaving cross-bars remain intact at their ends with the body of the fiat bar they are formed in, said cross-bars c serving as rack-teeth. As shown,
, three slots b are formed in each rack-bar 9,
and the slots in one bar are arranged so that they do not lie directly opposite the slots in the other racl-bar, but Vsomewhat nearer the iiange 10, and, as appears in Figs. 2 and 4.,
the slots in each rack-bar are widened toward the inner sides of said rack-bars by bevelfacing the sides of the rack-teeth c that arev lmounted, which'is positioned within the case 10 and by its engagement with the spindle 11 is held for rotation or rocking movementfnear the rear or inner ends of the rack-bars 9. A set of three teeth e project radially from the periphery of the hub 12, and these teeth are so spaced apart and have such a length and relative positions forward of the axis of the hub and spindle 11 that when the spindle is rocked on its supports to be described in either direction the teeth will enter the slots Hin the Iocrack-bar toward which said teeth are turned and engage successively with the rear side of the rear slot and with the cross-bars or teeth c, thereby pulling the rack-bar and latch-bolt 8 rearward.
Upon the inner end of the latch-bolt 8 a diametricallyreduced bolt extension 8b is formed or aliXed centrally, which is of a length that will not interfere with the reciprocation of the latch-bolt, and upon the extension 8b an end portion of acoiled spring 13 is mounted.
Near the teeth e on the hub-block 12 an abutment-bar g is secured by its ends in the wall ot the case 10 across its axis, and upon the front side of the abutment-bar g the shoe g', that is mounted upon the rear end of the spring 13, seats. The shoe g' is formed of a plate-metal strip bent into a rectangular loop, the flat 'transverse member g2 of which engages the abutment-bar.
The diameter ot' the spring 13 and thickness of the spaced members of the shoe g', that embrace the rear portion of said spring, is such that they together have lateral support from the rack-bars 9 they are positioned between, so that the latch-bolt 8, which is normally pressed outward and has its nose 8u projected exterior of the face-plate 10b, may be pressed into the case 10 against stress of the coiled spring 13 or be drawn therein, if the spindle 11 is rocked in either direction a sufficient degree to cause the teeth e to successively engage the cross-bars or teeth c that are on the rack-bar toward which the spindle is rocked.
The door-locking mechanism, which is designed to coact with the door-latch that has been described, comprises the following details: A case for holding in proper relative positions the working parts of the lock consists of two substantially similar half-sections 14, that are essentially L-shaped in cross-section and have contact at diagonally-opposite side edges, these case-sections being held together by a clamping-screw L. (Shown in Fig. 2.) The closing end walls 14L of the case are curved into nearly semicircular form, as is indicated in Figs. 2 and 4, and, as shown in Fig. 1, two opposite side walls of the lock-case are thickened in their normally upper portions, said side walls being parallel with each other, as shown at z' in Fig. 5. Through the upper part of the lock-ease a circular opening ic is formed that is axially parallel with the sides t' or' the case and central between them, this opening l receiving the inner end of the latch-bolt case allel sides, is pivoted near its normally upper end upon a side wall 71 of the lock-case near the case-wall 10, as shown at I in Figs. 2 and 4, and in the edge ot' the pendent tumbler-bar that hangs in loose contact with the inner vertical side Wall of the abutment-block v/ two spaced notches m are formed. Below the notches m the tumbler-bar 15 is reduced in thickness by removal of material, as at 15, thus affording clearance from the keyholes'n, that are formed oppositely in the ease side walls z', as shown in Figs. 1, 2, and 4. A locking-bolt 16, that coacts with the bar 15 to lock the latch-bolt 8 from complete retraction, comprises an elongated slab of metal having such thickness as permits it to slide loosely in the space between the tumbler-bar 15 and the opposite case side wall t', the edges or' the locking-bolt near its center of length ha\v*ing a loose contact with the inner tace oi' the abutment-block c" and the side wall of the case that is opposite to and parallel with said face, as is clearly shown in Figs. 2 and 5.
A locking-nose o on the slidable bolt 16 is positioned' directly opposite and near to a suitable opening 0, that is formed in the side ot the latch-bolt case 10 behind and near to the rear ends ot' the rack-bars 9.
Upon the side of the locking-bolt 16 that is in loose contact with the tumbler-bar 15 a toe m' projects, which is adjacent to the abutment-block 1T and is designed to enter either notch m to hold the locking-bolt in locked or unlocked adjustment.
There is a plate-spring 17 secured by one end upon a side of the lock-case occupying space in the case behind the tumbler-bar 15, contacting with its free lower end upon the corresponding portion of said tumbler-bar, as shown in Figs. 2 and 4. There is a V-shaped notch p formed in the edge ot' the lockingbolt 16 near its lower end, which permits a key a of proper form, that ispassed into either keyhole a, to engage with either sloped edge of the notch and slide the bolt, so that its nose 0 will be pressed into the hole 0/ or be withdrawn therefrom in accordance with the drection in which the key u (shown in dotted lines in Fig. 4) is turned.
It will be seen that if the nose 0 of the locking-bolt 16 has been introduced by a rotatable movement of the key a into the hole o a turning movement of the key in the direction of the curved arrow in Fig. 4 will lirst im pingc the key-bit upon the lower end 15 ot the tumbler-bar 15 and rock said bar against pressure et the spring 17, which will carry the notch m, that is occupied by the toe m', away from this toe, thus releasing the locking-bolt 16 from the tumbler-bar. A further rocking movement or' the key-bit u will cause it to impinge upon the lower inclined edge of the notch p and draw the locking-bolt 16 downward, thus withdrawing the nose o of said bolt from the bolt-hole 0, this unlocked ad- IOO IIO
justment of the bolt 16 appearing in Fig. 2. When the bolt 16.is moved downward far enough to release the nose 0 from the bolthole o and the tumbler-bar 15 is permitted to assumea normal pendent position, the lowered adjustment of the toe m will permit its engagement within the lower notch m, thus securing the locking-bolt in unlocked condition.
i To mount the improved latch and lock upon a door that is represented at A in the drawings and which is a central portion of the vertical side member of a paneled door, a circularly-walled perforation?a is formed in the edge of the door centrally and of a suitable depth to permit the complete insertion of the case 10 therein, said perforation being counterbored at the outer end to produce a shallow recess wherein the radial flange 10a and face-plate 10b are embedded andsecured by screws s, as shown in Fig. 2. At a suitable pointin one side of the door-stile A below the perforation r an open recess t is formed of a depth and marginal shape which will permit the case for the lock to be embedded at the center of thickness of said stile, as appears in Fig. 1. Two escutcheon-plates 18 of suitable form and dimensions are provided as coverings for the recess or opening in the door, these plates being fixed in place by screws or similar means. A keyhole u is formed in each escutcheon-plate 18 opposite a respective keyhole@ in the lock-case, so that an appropriate key may be inserted therethrough for operating the lock.
Concentric with the transverse perforation d in the latch-bolt case 10, in which the knobspindle 11 is held to rock, a circular hole is formed in each esc'utcheon-plate 18, through whichvthe spindle extends outward, and in each of said holes a thimble 19 is secured that is loosely mounted upon the end of a shank 11c of a door-knob 11a, and, as shown in Fig. 1, said Shanks are centrally perforated for the reception of the ends of the spindle 11, said ends being held in place within the knobs by pins o, thatpass through the knob-Shanks and likewise through notches formed in the angular edge of the spindle, said pins being Ainserted through opposite perforations in the thimble 19.
It will be seen that the manner of holding the knobs upon the spindle by an engagement of cross-pins in notched edges of the spindle is very advantageous, as it avoids boring holes in the spindle, which weaken it, and also permits the use of a small spindle, which is desirable in the manufacture of locks of small size. It is claimed that the construction of the combined lock and latch enables it to be ap plied upon doors of ordinary thickness without weakening the door-stile or marring it in any manner.
It will be seen in Fig. Qthat an opening 02 is formed in the wall-of the latch-bolt case 10 directly opposite the opening 0 therein, this It is of course necessary that a suitable Y strike-plate 1()C be provided for a latching engagement of the nose 8 on the latch-block 8 therewith, saidstrike-plate, which may be of any preferred shape, being secured upon the jamb of the door-easement A, toward which the door swings to close it.
lt should be explained that as the nose of the locking-bolt 16 is projected within the latch-bolt case 10 at a point rearward of and near to either rack-bar 9 the rack-bar that is nearest to the nose o when it is shot into the case lOwill be prevented from sliding rearward sufficientl y to release the latch-bolt nose 8a from the strike-platelOC, so that the latchbolt is also a locking-bolt. l
As shown in Fig. 1, projections 03 are formed -at the rear end of the tubular casing lO'and project toward each other and serve las abutments whereon the rear rends of the rack-bars 9 may impinge and prevent them from passing out of the rear end of the casing at any time.
Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The combination with a latch-bolt case, a latch-bolt slidable in the case and, having a reduced portion, and an abutment secured transversely in the case rearward of the latchbolt, of a coiled spring mounted upon the reduced portion of the latch-bolt, and a platemetal loop-bent shoe, mounted upon the rear end of the spring and contacting with the abutment.
2. The combination with a latch-bolt case having atransverse perforation therein near its rear end, and a spring adapted to press the bolt outward, ofa knob-spindle held to rock in vthe transverse perforation, a toothed hub on.
the spindle, and two oppositely-arranged similar rack-bars rigidly secured to the latch-bolt and extending rearwardly therefrom, said bars each having at its rear end transverse teeth formed thereon by transverse spaced slots, the slots of the bars being out of 'alinement, the teeth on the bars being respectively engaged with the teeth on the hub when the spindle is rocked in opposite directions.
3. The combination of a latch-bolt case having a transverse perforation therein near its rear end, and an abutment in front of the perforation, a latch-bolt slidable in the casing, a spring between the latch-bolt and the abutment of the case, a knob-spindle in the perforation ofthe case, a toothed hub on the spindle, and two oppositely-arranged rackbars rigidlysecured to the latch-bolt and provided at their rear ends with teeth, the teeth being formed by transverse openings in the bars, the openings ot' the bars being out of alirement and having their outer walls beve e 4. The combination with a latch-bolt case, and a perforated lock-case wherein an end of the latch-bolt case is inserted, of a springpressed tumbler-bar pivoted by one end and hung'pendent in the lock-case, said bar having two spaced notches in one side edge, and a slidable lock-bolt having notched lower end and a toe adapted to enter either notch ot' the tumbler-bar to hold the said bar in a locked or unlocked position, the nose of the lock-bolt passing into a hole in the latch-bolt case when the lock-bolt is raised and locked in one of the notches.
5. The combination with a latch-case having an opening at its inner end, a latch-bolt in the said case, and a lock-case having one end perforated to receive the latch-case, of a spring-pressed tumbler-bar pivoted at one end and having its free end reduced, the said bar being provided above the reduced end with two notches, and a sliding lock-bolt having a nose at one end to enter the opening of the latch-case behind the latch-bolt to prevent the latter from being retracted, a toe Jfor engaging either of the notches of the tumblerbar, and a notch at its -lower end, opposite the reduced end of the tumbler-bar, as and for the purpose set forth.
6. Adoorlatch and lock, comprisingalatehcase having an opening in one side at its inner end, a spring-pressed latch-bolt in the case and having rearwardI v-extending rack-bars rigid therewith, a knob-spindle mounted in the case, a toothed hub on the spindle, a lochcase having an opening at one end to receive the latch-case, a pivoted and spring-pressed tumbler in the lock-case, a sliding bolt also in the lock-case and provided with a nose adapted to project into the latch-case in rear of one olE the rack-bars of the latch-bolt, and an interlocking connection between the bolt and tumbler to hold the former in either position to which it is moved.
7. A door latch and loch, comprising a latchcase having an opening in one side at the inner end, a spring-pressed latch-bolt in the case and having oppositely-arranged and real'- wardly-extending bars, said bars being rigidly secured to the bolt and provided with openings forming teeth, a knob-spindle mounted in the case, a toothed hub on the knob-spindle, a lock-case having an opening at one end through which the latch-case projects, a pivoted and spring-pressed tumbler in the lochcase, said tumbler having its 'lree end reduced and provided above its reduced end with spaced notches, and a sliding` bolt in the lochcase and provided with V-shaped notch at its lower end and with a toe adapted to cuter either of the notches oi the tumbler.
In testimony whereof l` have signed my name to this specilication in the presence of two subscribing witnesses.
VitneSSeS:
HENRY B. BALL, C. lVnNGnR.
US1904215751 1904-07-08 1904-07-08 Latch and lock. Expired - Lifetime US790659A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2842631A (en) * 1954-12-08 1958-07-08 Martens Daniel Georg Safety spring locks

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2842631A (en) * 1954-12-08 1958-07-08 Martens Daniel Georg Safety spring locks

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