US2592843A - Spring actuated slide snap hook - Google Patents

Spring actuated slide snap hook Download PDF

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Publication number
US2592843A
US2592843A US61475A US6147548A US2592843A US 2592843 A US2592843 A US 2592843A US 61475 A US61475 A US 61475A US 6147548 A US6147548 A US 6147548A US 2592843 A US2592843 A US 2592843A
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Prior art keywords
link
pin
coupling
door
snap hook
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US61475A
Inventor
Boley A Andrews
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SandenVendo America Inc
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Vendo Co
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Priority to US61475A priority Critical patent/US2592843A/en
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    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E05F15/665—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings
    • E05F15/668—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings for overhead wings
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/106—Application of doors, windows, wings or fittings thereof for buildings or parts thereof for garages
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/45—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock]
    • Y10T24/45225—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock] including member having distinct formations and mating member selectively interlocking therewith
    • Y10T24/45272—Projection passes through cavity then moves toward noninserted portion of its member to complete interlock [e.g., snap hook]
    • Y10T24/45288—Hook type projection member
    • Y10T24/45304—Noninserted portion of projection member includes movably connected gate for closing access throat
    • Y10T24/45382—Track or way guided gate
    • Y10T24/45387—Track or way guided gate having means biasing gate
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/08—Bolts
    • Y10T292/0911—Hooked end
    • Y10T292/0945—Operating means
    • Y10T292/0951—Rigid
    • Y10T292/0956—Sliding catch

Definitions

  • This invention relates to garage dooropeners and particularly of the type-wher'einthe door is movable from a closed position to an overhead position in a substantially horizontal plane through the 'medium'ofan electric motor or like prime mover having connectionwith the door through an interconnecting rectilinearlymovable follower block.
  • Coupling means'heretofore provided between the door itself and the-control means therefor have been so complicated that a quick and easy disconnection is not possible. This 'problem'is enhanced when those not particularly skilled mechanically are faced with'the problem of-a jammed door and by' -those who do not have the physical strength necessary to make-such-"disconnection.
  • a coupling that includes'an'elongated link provided with a hook on one end thereof for receiving a pin, said link, also, having'a latch member slidably mounted thereon formovement' toand'from a position closing the mouth of the hook and thereby releasably clamping the pin in place and interlocked with the link.
  • a further object of the present invention is to provide a coupling of the above-mentioned character having an extensible linkage provided with latching means on both enclsthereof of identical character, to the end that, when disconnection becomes necessary, that end of the linkage most conveniently accessible can be manipulated with easeand dispatch.
  • Fig; 5- is a transversacross sectional viewtaken on -line-- V'V of-Fig'. 2; looking :in' the direction 'of'the arrows.
  • Wall -l2- is' providedf withg access opening l4 that isclosed by a door 16 that includes a. pluralityot articulated sections mounted between a p'airof u-shaped tracks,--'one of which isillu'strated in Fig,- l of the drawing J and designated 'by: the numerall 8. 1
  • bracket 24 is.more clearly illustrated in Figs, 2 "and 3 of .the drawing Land is UJ-shaped "in: cross. section .to .Lpresent a pair of spaced legs 28 that are interconnected-by removable cross pm 301 held in .place :by :key 32. It is apparent that thelbight of bracket 24 has the-bolt holes 26 formedtherein.
  • A- similar bracket 34 ' is mounted uponthe door 16 by bolts or'the like;36, said bracket. 34, also, .being. provided with a cross pin 38..interconnecting :the' legsthereof.
  • the coupling iorxhitch forming the subject" matter. of this invention-and showing one end of ithe coupling with: tha latch I about to be described is designed to span the distance between the pins 30 and 38 of brackets 28 and 34, respectively, said coupling being broadly designated by the numeral 40.
  • Coupling 40 includes a pair of identical, elongated links 42 and 44 having their proximal ends overlapped and joined by a pair of bolts 46.
  • the links 42 and 44 are provided with aligned, elongated slots 48 for receiving the bolts 46; and intermeshing, transverse teeth 50 on the proximal faces of links 42 and 44 hold the same interconnected when the bolts 45 are tightened down.
  • link 42 The outermost free end of link 42 is provided with a hook defining an elongated notch or recess '52 extending inwardly from one of the longitudinal'edges of link 42.
  • the width of this notch 52 issubstantially the same as the diameter of pin 35, to the end that link 42 may be looped about the pin 30 in the manner illustrated in Figs. 2 and 4.
  • a latching member 54 is disposed in partial embracing relationship to the link 42 adjacent that end thereof having notch 52 formed therein, said latching member 54 being U-shapcd in cross section, as illustrated in Fig. of the drawing.
  • latch 54 when latch 54 slides upon the link 42, the bight thereof frictionally engages the longitudinal edge of link 42 having notch 52 formed therein.
  • the legs of the latch 54 overlap and slideupon the opposed side walls of link 42.
  • the two side walls of latch 54 are provided with aligned, elongated, longitudinally-extending slots 55 intermediate the ends thereof for receiving a transverse pin 58 mounted in the link 42.
  • One end of the pin 58 extends outwardly beyond the outermost face of the latch 54 for receiving one end of a spring 50.
  • the opposite end of spring 60 is secured to one of a pair of outturned flanges 62 on the member 54. These flanges 62 are disposed on that end of the member 54 remote from the notch 52 and are substantially perpendicular to the sides of member 54.
  • That end of the member 54 opposite to the outturned flanges 62 has the side wallsthereof provided with aligned, inwardly-extending, elongated recesses or notches 64.
  • the longitudinal axes of the notches 64 are disposed on a line substantially midway between the top and bottom of the respective walls of member 54 and in alignment with the longitudinal axes of such walls.
  • the longitudinal axes of the two notches 54 are substantially perpendicular to the longitudinal axis of the notch 52 formed in link 42.
  • the pin 30 is not only disposed within the notch 52 of link 42 but is embraced by the two notches 64 of the side walls of U-shaped member 54.
  • a portion of the bight of latch 54 overlies and closes entirely the mouth of notch 52.
  • a portion of the side walls of member 54 between the bight thereof and notches B4 overlaps the link 42 on both sides thereof and on both sides of the notch.
  • the spring 60 yieldably holds the latch member 54 biased in the operating position shown in Fig. 2 of the drawing and, when latch 54 is in said position, that end of the slots 55 proximal to the flanges 62 bears against the pin 58 and limits the extent of outward movement of latch 54 on link 42.
  • Doors of the character illustrated in Fig. l are usually provided with counterbalancing means and at no time will the pressure upon the coupling 40 be so great that the same cannot be easily swung from the operative position when either or both of the two latching means 54 is moved inwardly on the respective links 42 and '44.
  • the coupling 40 is devoid of all complicated Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:
  • a rod-receiving coupling comprising an elongated, flat link having a U-shaped recess formed in one longitudinal edge thereof; an elongated, U-shaped body mounted on the link and having a bight slidably engagin said one longitudinal edge of the link and a pair of spaced, parallel side Walls, slidably engaging corresponding sides of the link and integral with said bight, said side walls each having an elongated, longitudinally extending slot formed therein and a U-shaped notch in one end thereof proximal to the recess, said notches each having a pair of straight edges disposed in converging relationship as the innermost ends thereof are approached; an outturned, finger-receiving flange on each side wal of the body adjacent the opposite end thereof; a transverse guide pin affixed to the link and extending through said slots of the side walls for holding said bight in engagement with said edge of the link; and a spring having one end thereof attached to said pin and the opposite end thereof attached

Landscapes

  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)

Description

April 15, 1952 B. A. ANDREWS 2,592,843
SPRING ACTUATED SLIDE SNAP HOOK Filed Nov. 22. 1948 IN V EN TOR.
BY 1/ 4 r I w ATTMNE VXG.
Patented Apr. 15, 1952 U NITED STAT ES NT OFFICE ISPRING ACTUATED SLIDE SNAP .HOOK Boley A. Andrews; Kansas ..'City,itKans., assignor, by mesne assignments, to The Vendo Company, Kansas City, Mo., a corporation of--Missouri Application November 22,"1948;-SerialNo1'61 ,475
l'Claim. 1 This invention relates to garage dooropeners and particularly of the type-wher'einthe door is movable from a closed position to an overhead position in a substantially horizontal plane through the 'medium'ofan electric motor or like prime mover having connectionwith the door through an interconnecting rectilinearlymovable follower block.
It is the most'importantobject of this invention to provide a novel coupling or hitch for joining an overhead'garage door with a follower block of the above-mentioned character, said couplingincluding an interlocking device onat least one end thereof that'maybe'easily; and quickly disconnected regardless of the-position 'of the door and irrespective of the weight that is on the coupling at the timesuch disconnection takes place.
It'is common knowledge in the field of garage door mechanisms of the kind above set forth that oftentimes operational failures of the automatic door controlling assembly itself necessitates-disconnecting of the door for manual opening and closing thereof while the controlmeehanismis being repaired and out of order.
Coupling means'heretofore provided between the door itself and the-control means therefor have been so complicated that a quick and easy disconnection is not possible. This 'problem'is enhanced when those not particularly skilled mechanically are faced with'the problem of-a jammed door and by' -those who do not have the physical strength necessary to make-such-"disconnection.
It is, accordingly, one of the most important objects of the present invention'to provide a coupling that includes'an'elongated link provided with a hook on one end thereof for receiving a pin, said link, also, having'a latch member slidably mounted thereon formovement' toand'from a position closing the mouth of the hook and thereby releasably clamping the pin in place and interlocked with the link.
A further object of the present invention is to provide a coupling of the above-mentioned character having an extensible linkage provided with latching means on both enclsthereof of identical character, to the end that, when disconnection becomes necessary, that end of the linkage most conveniently accessible can be manipulated with easeand dispatch.
Other objects of the present invention relate to details of construction that will become apparent asthe following specification;progresses,
thereof :in a released condition; and,
' Fig; 5- is a transversacross sectional viewtaken on -line-- V'V of-Fig'. 2; looking :in' the direction 'of'the arrows.
' The garage :door opening mechanism-shown schematically iii-Fig.1 ofithe drawing-forms the subject matter-of my copending applicationlNo. 61,47 3, filed-November 22, 1948, "entitled Motor RActuated: Door Operator; and, while the same forms no partof the' present invention,- the-broad :operation thereof is as follows:
'Ihe: ceiling of a garageis illustrated by the 'numeral l 0 and the front wall of th'e garagle by the: numeral [2. Wall -l2- is' providedf withg access opening l4 that isclosed by a door 16 that includes a. pluralityot articulated sections mounted between a p'airof u-shaped tracks,--'one of which isillu'strated in Fig,- l of the drawing J and designated 'by: the numerall 8. 1
A motor (not shown) #within-a housing fll-is suspended from the ceiling l0 near-one end-therelof opposite to front wall-12, said motor having operable. connection with afollower "rectiline'arly Lmounted within-a track -22-depending from ceiling I 0 and extending longitudinally ofthegarage. Said T follower has: a bracket 24 secured to-the .bottom thereof by means of bolts :or the like" :passing through openingsitflof bracket24.
This bracket 24 is.more clearly illustrated in Figs, 2 "and 3 of .the drawing Land is UJ-shaped "in: cross. section .to .Lpresent a pair of spaced legs 28 that are interconnected-by removable cross pm 301 held in .place :by :key 32. It is apparent that thelbight of bracket 24 has the-bolt holes 26 formedtherein.
A- similar bracket 34 'is mounted uponthe door 16 by bolts or'the like;36, said bracket. 34, also, .being. provided with a cross pin 38..interconnecting :the' legsthereof. The coupling iorxhitch forming the subject" matter. of this invention-and showing one end of ithe coupling with: tha latch I about to be described is designed to span the distance between the pins 30 and 38 of brackets 28 and 34, respectively, said coupling being broadly designated by the numeral 40.
Coupling 40 includes a pair of identical, elongated links 42 and 44 having their proximal ends overlapped and joined by a pair of bolts 46. The links 42 and 44 are provided with aligned, elongated slots 48 for receiving the bolts 46; and intermeshing, transverse teeth 50 on the proximal faces of links 42 and 44 hold the same interconnected when the bolts 45 are tightened down.
It is thus far apparent that the interconnecting bar formed by links 42 and 44 is extensible through loosening of bolts 46. The outermost, free ends of links 42 and 44 and the latching means for interconnecting the same to the respective pin 38 or 38 are the same; and, therefore, such latching means with respect to link 42 only will be described.
The outermost free end of link 42 is provided with a hook defining an elongated notch or recess '52 extending inwardly from one of the longitudinal'edges of link 42. The width of this notch 52 issubstantially the same as the diameter of pin 35, to the end that link 42 may be looped about the pin 30 in the manner illustrated in Figs. 2 and 4. A latching member 54 is disposed in partial embracing relationship to the link 42 adjacent that end thereof having notch 52 formed therein, said latching member 54 being U-shapcd in cross section, as illustrated in Fig. of the drawing.
Thus, when latch 54 slides upon the link 42, the bight thereof frictionally engages the longitudinal edge of link 42 having notch 52 formed therein. The legs of the latch 54 overlap and slideupon the opposed side walls of link 42.
The two side walls of latch 54 are provided with aligned, elongated, longitudinally-extending slots 55 intermediate the ends thereof for receiving a transverse pin 58 mounted in the link 42. One end of the pin 58 extends outwardly beyond the outermost face of the latch 54 for receiving one end of a spring 50. The opposite end of spring 60 is secured to one of a pair of outturned flanges 62 on the member 54. These flanges 62 are disposed on that end of the member 54 remote from the notch 52 and are substantially perpendicular to the sides of member 54.
That end of the member 54 opposite to the outturned flanges 62 has the side wallsthereof provided with aligned, inwardly-extending, elongated recesses or notches 64. The longitudinal axes of the notches 64 are disposed on a line substantially midway between the top and bottom of the respective walls of member 54 and in alignment with the longitudinal axes of such walls.
Thus, as is apparent in Figs. 2 and 4 of the drawing, the longitudinal axes of the two notches 54 are substantially perpendicular to the longitudinal axis of the notch 52 formed in link 42. When the latch member 54 is in the operative position of Fig. 2 of the drawing, the pin 30 is not only disposed within the notch 52 of link 42 but is embraced by the two notches 64 of the side walls of U-shaped member 54.
A portion of the bight of latch 54 overlies and closes entirely the mouth of notch 52. A portion of the side walls of member 54 between the bight thereof and notches B4 overlaps the link 42 on both sides thereof and on both sides of the notch The spring 60 yieldably holds the latch member 54 biased in the operating position shown in Fig. 2 of the drawing and, when latch 54 is in said position, that end of the slots 55 proximal to the flanges 62 bears against the pin 58 and limits the extent of outward movement of latch 54 on link 42.
Releasing of the coupling is simple and accomplished by merely grasping the flanges 62 and exerting an inward pull to the member 54 with respect to link 42. Such movement of the member 54 against the action of spring 60 will position the member 54, as illustrated in Fig. 4 of the drawing, where link 42 is free to drop from its position embracing the pin 30.
Doors of the character illustrated in Fig. l are usually provided with counterbalancing means and at no time will the pressure upon the coupling 40 be so great that the same cannot be easily swung from the operative position when either or both of the two latching means 54 is moved inwardly on the respective links 42 and '44. The coupling 40 is devoid of all complicated Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:
A rod-receiving coupling comprising an elongated, flat link having a U-shaped recess formed in one longitudinal edge thereof; an elongated, U-shaped body mounted on the link and having a bight slidably engagin said one longitudinal edge of the link and a pair of spaced, parallel side Walls, slidably engaging corresponding sides of the link and integral with said bight, said side walls each having an elongated, longitudinally extending slot formed therein and a U-shaped notch in one end thereof proximal to the recess, said notches each having a pair of straight edges disposed in converging relationship as the innermost ends thereof are approached; an outturned, finger-receiving flange on each side wal of the body adjacent the opposite end thereof; a transverse guide pin affixed to the link and extending through said slots of the side walls for holding said bight in engagement with said edge of the link; and a spring having one end thereof attached to said pin and the opposite end thereof attached to one of said flanges for pulling the flanges toward the pin and thereby yieldably holding the body at one end of its path of travel on the link with the notches registering with said recess, with the mouth of the recess closed by a portion of said side walls and said bight and with the mouths of the notches closed by a portion of the link, whereby to receive said rod in engagement with the notches and the recess at the bights thereof, said last mentioned bights being arcuate.
BOLEY A. ANDREWS.
(References on following page) REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date Palmer July 28, 1863 Robinson Mar. 14, 1871 Koch Sept. 17, 1878 Mauthner July 22, 1884 10 Grant Oct. 25, 1898 Rice Feb. 20, 1906 Teeter Nov. 24, 1914 Shimizu Apr. 6, 1920 Number Number 6 i Name Date Nittel Nov. 8, 1921 Reidhaar Dec. 3, 1929 Sanon Aug. 30, 1932 Buccicone Aug. 24, 1937 Gauss May 9, 1939 Shaw Apr. 18, 1944 FOREIGN PATENTS Country Date Germany Feb. 18, 1880 Great Britain Oct. 27, 1905 France Oct. 4, 1922
US61475A 1948-11-22 1948-11-22 Spring actuated slide snap hook Expired - Lifetime US2592843A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2713505A (en) * 1952-11-13 1955-07-19 Kenneth E Luger Latch
US2931406A (en) * 1957-02-11 1960-04-05 Gen Slicing Machine Co Inc Automatic locking, detachable carriage for food slicing machines
US3466715A (en) * 1967-06-05 1969-09-16 Norco Inc Releasable plug-and-socket fastener

Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10855C (en) * F. VONBRIEL in Hanau Locks for chains and jewelry
US39351A (en) * 1863-07-28 Improved snap-hook
US112635A (en) * 1871-03-14 Improvement in safety-hasps or latches
US208018A (en) * 1878-09-17 Improvement in clasps for exhibiting shoe-laces
US302509A (en) * 1884-07-22 Max matjthnee
US613139A (en) * 1898-10-25 Emmett c
US812879A (en) * 1905-08-26 1906-02-20 Underwood Typewriter Co Fastening-hook.
GB190521867A (en) * 1905-10-27 1906-07-19 Ebenezer Satchwell Improvements in Fasteners for Bracelets, Necklets, Key-chains and the like.
US1118701A (en) * 1914-06-01 1914-11-24 Mahlon H Teeter Adjustable automobile-pedal.
US1336383A (en) * 1918-07-16 1920-04-06 Shimizu Yoshi Tire-chain fastener
US1396588A (en) * 1921-05-05 1921-11-08 M S Company Jewelry catch or clasp
FR547824A (en) * 1921-02-27 1922-12-26 International key lock device for railway wagons
US1737730A (en) * 1928-07-06 1929-12-03 Hercules Prod Inc Fastening device
US1874632A (en) * 1931-09-19 1932-08-30 Sanon Joseph Fastener
US2091093A (en) * 1936-11-09 1937-08-24 Buccicone Dario Safety latch for hooks
US2157288A (en) * 1937-05-29 1939-05-09 Gauss Eugen Attaching hook for watch wristlets
US2347133A (en) * 1943-02-25 1944-04-18 Caesar A Calder Shirt aligning device

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10855C (en) * F. VONBRIEL in Hanau Locks for chains and jewelry
US39351A (en) * 1863-07-28 Improved snap-hook
US112635A (en) * 1871-03-14 Improvement in safety-hasps or latches
US208018A (en) * 1878-09-17 Improvement in clasps for exhibiting shoe-laces
US302509A (en) * 1884-07-22 Max matjthnee
US613139A (en) * 1898-10-25 Emmett c
US812879A (en) * 1905-08-26 1906-02-20 Underwood Typewriter Co Fastening-hook.
GB190521867A (en) * 1905-10-27 1906-07-19 Ebenezer Satchwell Improvements in Fasteners for Bracelets, Necklets, Key-chains and the like.
US1118701A (en) * 1914-06-01 1914-11-24 Mahlon H Teeter Adjustable automobile-pedal.
US1336383A (en) * 1918-07-16 1920-04-06 Shimizu Yoshi Tire-chain fastener
FR547824A (en) * 1921-02-27 1922-12-26 International key lock device for railway wagons
US1396588A (en) * 1921-05-05 1921-11-08 M S Company Jewelry catch or clasp
US1737730A (en) * 1928-07-06 1929-12-03 Hercules Prod Inc Fastening device
US1874632A (en) * 1931-09-19 1932-08-30 Sanon Joseph Fastener
US2091093A (en) * 1936-11-09 1937-08-24 Buccicone Dario Safety latch for hooks
US2157288A (en) * 1937-05-29 1939-05-09 Gauss Eugen Attaching hook for watch wristlets
US2347133A (en) * 1943-02-25 1944-04-18 Caesar A Calder Shirt aligning device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2713505A (en) * 1952-11-13 1955-07-19 Kenneth E Luger Latch
US2931406A (en) * 1957-02-11 1960-04-05 Gen Slicing Machine Co Inc Automatic locking, detachable carriage for food slicing machines
US3466715A (en) * 1967-06-05 1969-09-16 Norco Inc Releasable plug-and-socket fastener

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