US3406995A - Releasable catch for equipment - Google Patents

Releasable catch for equipment Download PDF

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Publication number
US3406995A
US3406995A US564813A US56481366A US3406995A US 3406995 A US3406995 A US 3406995A US 564813 A US564813 A US 564813A US 56481366 A US56481366 A US 56481366A US 3406995 A US3406995 A US 3406995A
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Prior art keywords
arm
catch
cam
slide bolt
recess
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Expired - Lifetime
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US564813A
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John J Mccarthy
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Norco Inc
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Norco Inc
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    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D7/00—Hinges or pivots of special construction
    • E05D7/10—Hinges or pivots of special construction to allow easy separation or connection of the parts at the hinge axis
    • E05D7/1061—Hinges or pivots of special construction to allow easy separation or connection of the parts at the hinge axis in a radial direction
    • E05D7/1077—Hinges or pivots of special construction to allow easy separation or connection of the parts at the hinge axis in a radial direction with snap-fitted pins
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D5/00—Construction of single parts, e.g. the parts for attachment
    • E05D5/10—Pins, sockets or sleeves; Removable pins
    • E05D5/14—Construction of sockets or sleeves
    • E05D2005/145—Construction of sockets or sleeves with elastically deformable parts
    • 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
    • Y10T292/096—Sliding
    • Y10T292/0969—Spring projected
    • Y10T292/097—Operating means
    • Y10T292/0977—Cam
    • Y10T292/0982—Bolt blocking or disabling means
    • Y10T292/0983—Involves rollback
    • 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
    • Y10T292/096—Sliding
    • Y10T292/0969—Spring projected
    • Y10T292/097—Operating means
    • Y10T292/0994—Lever

Definitions

  • a releasable catch for use with mechanical equipment comprising a base or anchorage member having a front recess for receiving a movable bar of the equipment, and having a guideway which meets said recess.
  • a slide bolt is movable in the guideway and adapted to project into the recess for locking the bar therein. Operation of the slide bolt is effected by a manuallyoperable cam piece pivotally carried by the base oranchorage member.
  • This invention relates to releasable catches or latches of the type employed to temporarily hold movable members or parts of equipment, as for example doors, gratings and the like.
  • :-Objects of the invention are to provide an improved releasable catch for equipment, which effects an especially secure and reliable retention of the parts involved while at the same time enabling the release to be easily and quickly effected; to provide a catch as thus characterized, which is relatively small and compact, easily mounted, and adaptable to a wide variety of situations; to provide a catch as above, which iseasily rendered operative to secure the associated parts of the equipment in the desired relationship, and which will remain in either the latching or the unlatching condition as required; and to provide an improved catch having relatively few parts which may be economically fabricated and assembled, and which have straight-forward, simple and foolproof movements providing the maximum degree of reliability.
  • FIG. 1 is a front elevational view of the improved catch as provided by the invention. g V
  • FIG. 2 is a view partly in side elevation and partly in vertical section, of the catch of FIG. 1. Shown in FIG. 2 is a portion of a grating structure having a bar which is engaged by the catch.
  • FIG. 3 is a top plan view of the catch of FIGS. 1 and 2.
  • the present improved releasable catch comprises an anchorage member 10 having means in the form of fiat base 12, for mounting the member on a piece of mechanical equipment such as the supporting structure 14 shown in FIGS. 2 and 3.
  • the mechanical equipment may further comprise a movable part, such as a door, grating or the like, such movable part being designated 16 in FIG. 2 and including a protuberant bar 18 mounted to provide a space 20 between it and an adjoining surface 22 of the movable part.
  • the anchorage member 10 has a recess 24 in which the bar 18 is receivable, said recess being provided in a block 26 which is rigid on the base 12 and disposed to project at right angles from the base.
  • the block 26 comprises part of the anchorage member 10, and has a guideway 28 preferably in the form of a cylindrical bore, said guideway meeting the recess 24 and slidably carrying a slide bolt 30 having a locking end 32 which is disposable in or else removable from the recess 24 respectively, for advanced and retracted positions of the slide bolt.
  • FIGS. 1 and 2 the bolt 30 is shown in the advanced position wherein the locking end 32 projects into the ni d.
  • the bolt 30 is movable in an upward direction as viewed in FIGS. 1 and 2, to a retracted position wherein the locking end 32 is substantially entirely'removed from the recess 24.
  • Spring means comprising a helical compressing spring 34 is provided, for biasingthe slide bolt 30 to the advanced position shown.
  • the spring 34 is disposed on the shank of the bolt 30, and engages a shoulder 36 of the bolt as well as a collar 38 which is snugly received in the guideway 28 and secured in a fixed position by a pin 40.
  • the manually operable cam means comprises an arm 42 which is pivotally connected to the slide bolt 30 by means of a pivot pin 44, said cam arm being bifurcated and .the bolt 30 extending between the bifurcated portions 46 as shown in FIG. 2.
  • the arm 42 has cam portions 48 which engage the block 26 and the collar 38, thereby to effect actuation of the slide bolt when the cam arm is turned through an arc of approximately In FIG. 1, the cam arm 42 is shown as permitting the slide bolt 30 to occupy its advanced, locking position.
  • a retracted position of thecam arm 42 is indicated by the broken outline, and for such position the arm effects a retraction of the locking bolt 30, compressing the spring means 34 as will be understood.
  • the camming action of the cam portion 48 enables retraction of the bolt 30 to be effected with relatively little force even though the spring means 34 is fairly strong.
  • the block 26 has projecting lugs.52 disposed on opposite sides of the cam arm, constituting guides therefor whereby the arm is restricted for movement in a plane which is parallel to the base v12, for the permitted 90 arc of travel.
  • the cam. arm 42 includes an elongated projecting finger piece 54 which extends either generally parallel or else perpendicular'to the axis of the slide bolt 30, depending on whether the manually operable arm 42 is in the locking position illustrated in the figures, or else in the releasing position shown by the broken outline in FIG. 1.
  • the movable part 16 of the mechanical equipment may be a pivoted grating, for example.
  • the grating 16 may have an arcuate path of travel indicated by the broken line 58.
  • the bar 18 carried by the movable part 16 of the equipment is shown as being retained in the recess 24 by the slide bolt 30, particularly the nose portion 32 thereof.
  • the part or grating 16 of the equipment is thus held in the open condition by the catch.
  • the cam arm 42 is swung upward through a 90 are from the full line position of FIG. 1 to the broken line position shown therein. This effects a retraction of the slide bolt 30 whereby the locking portion 32 is withdrawn from the recess 24.
  • the bar 18 is now free to leave the recess, and the grating or other part 16 may be swung to the right as viewed in FIG. 2.
  • the stop lugs 50 of the cam arm define the limits of movement thereof, and when the arm is in the releasing position the lug 50 will engage the right side of the block 62 as viewed in FIG. 1. With the full line position of the cam arm as illustrated in FIG. 1, the stop lug 51 engages the right side surface of the block 26. Even though the slide bolt 30 and locking portion 32 thereof are cylindrical, as well as the guideway 28, turning movement of the bolt is prevented by the guiding lugs 52 which are engageable with the cam arm 42. J p
  • the locking nose portion 32 of the slide bolt has a sloping outer face 33 to enable the bolt to be momentarily cammed to its retracted position by the bar 18 when the grating 16 is swung to the open position and engages the catch.
  • said anchorage member having a recess in which the bar is receivable, and having a guideway which meets said recess,
  • said anchorage member comprising a flat base and a block disposed on said base at right angles thereto,
  • said manually operable cam means comprising an arm pivotally connected to the slide bolt
  • said arm having a pair of projecting lugs disposed respectively at the ends of the cam portion and engageable respectively with opposite sides of the block to constitute stops for limiting the forward and backward movements of the arm
  • said block having a pair of spaced, flat, projecting parallel guide lugs disposed parallel to said flat base and extending on opposite sides of the bifurcated portion of the cam arm, said lugs constituting guides for the arm,
  • said anchorage member includes a collar secured in its guideway

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Description

Oct. 22, 1968 .1. J. M CARTHY 3,
RELEASABLE CATCH FOR EQUIPMENT Filed July 13. 1966 INVENTOR.
J56? (I Mccahlhf/ AGENT 3,406,995 at RELEASABLE CATCH FOR EQUIPMENT John J. McCarthy, Weston, Conn., assignor to Norco, Inc., Ridgefield, Conn., a corporation of Connecticut Filed July 13, 1966, Ser. No. 564,813 '2 Claims. (Cl. 292-169) ABSTRACT OF THE DISCLOSURE A releasable catch for use with mechanical equipment, comprising a base or anchorage member having a front recess for receiving a movable bar of the equipment, and having a guideway which meets said recess. A slide bolt is movable in the guideway and adapted to project into the recess for locking the bar therein. Operation of the slide bolt is effected by a manuallyoperable cam piece pivotally carried by the base oranchorage member.
This invention relates to releasable catches or latches of the type employed to temporarily hold movable members or parts of equipment, as for example doors, gratings and the like.
:-Objects of the invention are to provide an improved releasable catch for equipment, which effects an especially secure and reliable retention of the parts involved while at the same time enabling the release to be easily and quickly effected; to provide a catch as thus characterized, which is relatively small and compact, easily mounted, and adaptable to a wide variety of situations; to provide a catch as above, which iseasily rendered operative to secure the associated parts of the equipment in the desired relationship, and which will remain in either the latching or the unlatching condition as required; and to provide an improved catch having relatively few parts which may be economically fabricated and assembled, and which have straight-forward, simple and foolproof movements providing the maximum degree of reliability.
Other features and advantages will hereinafter appear.
In the drawings:
FIG. 1 is a front elevational view of the improved catch as provided by the invention. g V
FIG. 2 is a view partly in side elevation and partly in vertical section, of the catch of FIG. 1. Shown in FIG. 2 is a portion of a grating structure having a bar which is engaged by the catch.
FIG. 3 is a top plan view of the catch of FIGS. 1 and 2.
Referring to the figures, the present improved releasable catch comprises an anchorage member 10 having means in the form of fiat base 12, for mounting the member on a piece of mechanical equipment such as the supporting structure 14 shown in FIGS. 2 and 3. The mechanical equipment may further comprise a movable part, such as a door, grating or the like, such movable part being designated 16 in FIG. 2 and including a protuberant bar 18 mounted to provide a space 20 between it and an adjoining surface 22 of the movable part.
The anchorage member 10 has a recess 24 in which the bar 18 is receivable, said recess being provided in a block 26 which is rigid on the base 12 and disposed to project at right angles from the base. The block 26 comprises part of the anchorage member 10, and has a guideway 28 preferably in the form of a cylindrical bore, said guideway meeting the recess 24 and slidably carrying a slide bolt 30 having a locking end 32 which is disposable in or else removable from the recess 24 respectively, for advanced and retracted positions of the slide bolt.
In FIGS. 1 and 2, the bolt 30 is shown in the advanced position wherein the locking end 32 projects into the ni d. Saw Pat 3,406,995 Patented Oct. 22, 1968 recess 24. The bolt 30 is movable in an upward direction as viewed in FIGS. 1 and 2, to a retracted position wherein the locking end 32 is substantially entirely'removed from the recess 24. v,
Spring means comprising a helical compressing spring 34 is provided, for biasingthe slide bolt 30 to the advanced position shown. The spring 34 is disposed on the shank of the bolt 30, and engages a shoulder 36 of the bolt as well as a collar 38 which is snugly received in the guideway 28 and secured in a fixed position by a pin 40.
There is further provided a manually operable cam means acting on-the anchoragemember 10 and also on the slide bolt 30, for retracting the latter against the action of the spring means 34. The manually operable cam means comprises an arm 42 which is pivotally connected to the slide bolt 30 by means of a pivot pin 44, said cam arm being bifurcated and .the bolt 30 extending between the bifurcated portions 46 as shown in FIG. 2. The arm 42 has cam portions 48 which engage the block 26 and the collar 38, thereby to effect actuation of the slide bolt when the cam arm is turned through an arc of approximately In FIG. 1, the cam arm 42 is shown as permitting the slide bolt 30 to occupy its advanced, locking position. A retracted position of thecam arm 42 is indicated by the broken outline, and for such position the arm effects a retraction of the locking bolt 30, compressing the spring means 34 as will be understood. The camming action of the cam portion 48 enables retraction of the bolt 30 to be effected with relatively little force even though the spring means 34 is fairly strong.
On the arm 42, projecting stop lugs 50 are provided, for engagement with opposite sides of the block 26 to constitute stops for limiting the movement of the arm to the prescribed approximate 90 arc. v
The block 26 has projecting lugs.52 disposed on opposite sides of the cam arm, constituting guides therefor whereby the arm is restricted for movement in a plane which is parallel to the base v12, for the permitted 90 arc of travel. The cam. arm 42 includes an elongated projecting finger piece 54 which extends either generally parallel or else perpendicular'to the axis of the slide bolt 30, depending on whether the manually operable arm 42 is in the locking position illustrated in the figures, or else in the releasing position shown by the broken outline in FIG. 1.
Operation of the catch is as follows: the movable part 16 of the mechanical equipment may be a pivoted grating, for example. The grating 16 may have an arcuate path of travel indicated by the broken line 58.
Considering the locked condition shown in FIG. 2, the bar 18 carried by the movable part 16 of the equipment is shown as being retained in the recess 24 by the slide bolt 30, particularly the nose portion 32 thereof. The part or grating 16 of the equipment is thus held in the open condition by the catch. When it is desired to release the grating 16 for movement along the arcuate path 58, the cam arm 42 is swung upward through a 90 are from the full line position of FIG. 1 to the broken line position shown therein. This effects a retraction of the slide bolt 30 whereby the locking portion 32 is withdrawn from the recess 24. In consequence, the bar 18 is now free to leave the recess, and the grating or other part 16 may be swung to the right as viewed in FIG. 2. The stop lugs 50 of the cam arm define the limits of movement thereof, and when the arm is in the releasing position the lug 50 will engage the right side of the block 62 as viewed in FIG. 1. With the full line position of the cam arm as illustrated in FIG. 1, the stop lug 51 engages the right side surface of the block 26. Even though the slide bolt 30 and locking portion 32 thereof are cylindrical, as well as the guideway 28, turning movement of the bolt is prevented by the guiding lugs 52 which are engageable with the cam arm 42. J p
The locking nose portion 32 of the slide bolt has a sloping outer face 33 to enable the bolt to be momentarily cammed to its retracted position by the bar 18 when the grating 16 is swung to the open position and engages the catch. Thus, it is only necessary to actuate the cam arm 42 to effect release of the catch, or to return the arm to the locking position of FIG. 1 if it is occupying the releasing position shown in dotted outline in FIG. 1.
It will now be understood from the foregoing that I have provided an improved manually releasable catch which is especially sturdy and reliable in its operation, consisting of relatively few parts characterized by simple straightforward mechanical movements. The release of the catch is effected with relatively little force, by the provision of the cam-type release arm 42. Notwithstanding this, the catch will not accidentally release, this being due to the continuous force exerted on the slide bolt 30 by the spring means 34. The catch cannot be accidentally released, in consequence, by vibratory forces, sudden shock and the like.
Variations and modifications may be made within the scope of the claims, and portions of the improvement may be used without others.
I claim:
1. A releasable catch for use with a movable part of mechanical equipment, said part having a bar for engagement with the catch, said catch comprising, in combination:
(a) an anchorage member having means for mount ing it on said equipment,
(b) said anchorage member having a recess in which the bar is receivable, and having a guideway which meets said recess,
(c) a slide bolt movable in said guideway between advanced and retracted positions and having a locking end which is disposable in or else removed from said recess respectively for said positions, thereby to retain said bar in or else release it from the recess,
(d) spring means biasing the slide bolt to its advanced position,
(e) manually-operable cam means acting on the anchorage member and slide bolt, for retracting the latter against the action of said spring means,
(f) said anchorage member comprising a flat base and a block disposed on said base at right angles thereto,
(g) said block having in it the recess, guideway and slide bolt,
(h) said guideway and slide bolt being substantially parallel to the base,
(i) said recess facing in a direction away from and substantially normal to the base,
(j) said manually operable cam means comprising an arm pivotally connected to the slide bolt,
(k) said arm having a cam portion engaged with the block to effect actuation of the slide bolt,
(1) said arm having a pair of projecting lugs disposed respectively at the ends of the cam portion and engageable respectively with opposite sides of the block to constitute stops for limiting the forward and backward movements of the arm,
(m) said cam arm being bifurcated,
(n) said slide bolt extending between and being connected to the bifurcated portion of the cam arm,
(0) said block having a pair of spaced, flat, projecting parallel guide lugs disposed parallel to said flat base and extending on opposite sides of the bifurcated portion of the cam arm, said lugs constituting guides for the arm,
(p) the cam arm including an elongate projecting finger piece,
(q) said arm and finger piece occupying locking and unlocking positions which are generally 90 apart, (r) said finger piece extending either generally parallel or perpendicular to the axis of the slide bolt.
2. The invention as in claim 1, wherein:
(a) said anchorage member includes a collar secured in its guideway,
(b) the cam portion of said cam arm engaging one end of said collar,
(c) said spring means engaging the other end of said collar.
References Cited UNITED STATES PATENTS 595,290 12/1897 Dowman 292-169 X 761,568 5/1904 Wedler 292-169 X 1,478,735 12/1923 Czapkowsky 292-169 2,641,494 6/1953 Burris 292341.15 X
MARVIN A. CHAMPION, Primary Examiner. J. R. MOSES, Assistant Examiner.
US564813A 1966-07-13 1966-07-13 Releasable catch for equipment Expired - Lifetime US3406995A (en)

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EP0140700A2 (en) * 1983-10-31 1985-05-08 Deere & Company Self-aligning hinge
EP0274549A1 (en) * 1987-01-09 1988-07-20 Dieter Ramsauer Releasable concealed hinge for switch boards
US4778205A (en) * 1987-08-26 1988-10-18 Kaiser Electronics Precision latch assembly having means for restricting pin movement in three degrees of freedom
US4873745A (en) * 1987-01-09 1989-10-17 Dieter Ramsauer Unhingeable and concealed hinge for switching boxes
US5671957A (en) * 1995-12-14 1997-09-30 Raffini; Roger Child resistant tube latch
US6105809A (en) * 1997-05-19 2000-08-22 Peacock Company, Limited Lid mounting structure of vessel
US20050194793A1 (en) * 2001-06-13 2005-09-08 Fabrice Vitry Load floor latch
EP1621710A1 (en) 2004-07-29 2006-02-01 DURA Automotive Plettenberg Entwicklungs- und Vertriebs GmbH Hinge for vehicles
US20060130424A1 (en) * 2004-12-08 2006-06-22 Cheng-Wang Lin Fast disassembling joint structure
US20070080517A1 (en) * 2005-10-11 2007-04-12 Patterson Roger L Self locking coupling device
US20070192992A1 (en) * 2006-02-23 2007-08-23 Steven Su Cover module for a computer case
US7761958B2 (en) * 2005-12-09 2010-07-27 Allegris Corporation Hinge and latch mechanism
US7946632B1 (en) * 2007-02-20 2011-05-24 Mueller Allen B Apparatus for attaching accessories to a motorcycle
ITMI20111723A1 (en) * 2011-09-23 2013-03-24 Ivo Pellegri BUILT-IN HINGE FOR REVERSIBLE DOOR
US20160193799A1 (en) * 2013-09-12 2016-07-07 Fortuna Spezialmaschinen Gmbh Device for processing cardboard blanks
US9387899B1 (en) 2014-07-29 2016-07-12 Allen B. Mueller Adjustable open-air vehicle windshield implement for forced air displacement
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US595290A (en) * 1897-12-14 Thomas dowmaist
US761568A (en) * 1903-08-07 1904-05-31 August Heinrich Wilhelm Wedler Device for fastening, adjusting, and locking window-sashes.
US1478735A (en) * 1921-05-25 1923-12-25 Czapkowsky Wincanty Window fastener
US2641494A (en) * 1949-09-07 1953-06-09 Burris Allen Eugene Gate latch

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US595290A (en) * 1897-12-14 Thomas dowmaist
US761568A (en) * 1903-08-07 1904-05-31 August Heinrich Wilhelm Wedler Device for fastening, adjusting, and locking window-sashes.
US1478735A (en) * 1921-05-25 1923-12-25 Czapkowsky Wincanty Window fastener
US2641494A (en) * 1949-09-07 1953-06-09 Burris Allen Eugene Gate latch

Cited By (106)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0140700A3 (en) * 1983-10-31 1986-07-23 Deere & Company Self-aligning hinge
EP0140700A2 (en) * 1983-10-31 1985-05-08 Deere & Company Self-aligning hinge
US4873745A (en) * 1987-01-09 1989-10-17 Dieter Ramsauer Unhingeable and concealed hinge for switching boxes
EP0274549A1 (en) * 1987-01-09 1988-07-20 Dieter Ramsauer Releasable concealed hinge for switch boards
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