US2764440A - Door latch - Google Patents

Door latch Download PDF

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Publication number
US2764440A
US2764440A US467988A US46798854A US2764440A US 2764440 A US2764440 A US 2764440A US 467988 A US467988 A US 467988A US 46798854 A US46798854 A US 46798854A US 2764440 A US2764440 A US 2764440A
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US
United States
Prior art keywords
latch
door
lever
bolt
face plate
Prior art date
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
Application number
US467988A
Inventor
Harold M Marko
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Soss Manufacturing Co
Original Assignee
Soss Manufacturing Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Soss Manufacturing Co filed Critical Soss Manufacturing Co
Priority to US467988A priority Critical patent/US2764440A/en
Application granted granted Critical
Publication of US2764440A publication Critical patent/US2764440A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C1/00—Fastening devices with bolts moving rectilinearly
    • E05C1/08—Fastening devices with bolts moving rectilinearly with latching action
    • E05C1/12—Fastening devices with bolts moving rectilinearly with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch
    • E05C1/14—Fastening devices with bolts moving rectilinearly with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch the handle or member moving essentially towards or away from the plane of the wing or frame
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S292/00—Closure fasteners
    • Y10S292/31—Lever operator, flush
    • 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
    • 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
    • Y10T292/62—Bolt casings

Definitions

  • This invention relates to flush latches, especially latches for cabinets and house doors. y
  • the object ⁇ of the invention to provide a latch which is substantially ilush with the face of the door but which ⁇ can be operated by a push or pull lever which, when it rests, is substantially flush with the Itace of the latch body.
  • This piece of hardware is very simple in construction and involves only a few easily manufactured parts. When installed on a door it presents a very good appearance.
  • Fig. l is a front elevation of the latch.
  • FIG. 2 is a section taken on the line 2-2 of Fig. 1.
  • IFig. 3 is a section taken on line 3-*3 Iof Fig. 1 and showin-g an end elevation of the latch.
  • Fig. 4 is a fragmentary View of the edge of a door showing the latches and ⁇ the face plate installed.
  • Fig. '5 is an elevation of the bolt assembly.
  • Fig. 6 is a section taken on the line 6-6 of Fig. 5.
  • Fig. 7 is a plan View of the stamping of which the bol-t guide is made.
  • Fig. 8 is an elevation of an alternative form of latch.
  • Fig. l() is an end elevation of the latch taken on the line 10-10 of Fig. 8.
  • Fig 11 is a cross section taken on line 21'1-11'1 of Fig. 8.
  • the latch body 1 is located in door by bosses 2 and 3 in mounting aperture I4 and secured to the door by screws l5. These screws '5 pass through the bosses or spurs f8 which ⁇ are part of the latch body casting. These angular bosses ⁇ are provided -so that the screws can be driven obliquely into the door. The reason for this is to make it possible .to reach the screws with a screw driver when the latch lever is raised.
  • This casting forms on the outside a bevelled U escutcheon.
  • the ends of the U are chamfered at 28 in the same way that the legs of the U and the bottom of the U are chamfered.
  • This U is here shown as 4rect-angular but it may be other shape.
  • the U aords a large space which the platelike lever 9 covers and in which it functions.
  • the plate-like lever extends beyond the chamfered ends 2-8 of the U to provide space to grasp the lever.
  • T he latch body is provided with journal bearings 6 in which the pintle 7 supported on collars 7a of the latch lever 9 engage so that the lever is free to swing.
  • This lever has arm 10, which is L-shaped, and part of a casting which, when assembled, reaches into the slot 11 in the bolt guide #12.
  • the face plate 13 is secured to the edge of the door by screws 14. This face plate has attached to the back,
  • the bolt guide is made of one stamping, which is shown in its ilat form in Fig. 7. This stamping is subjected to punch and die operations to form the two por tions 16 and 17 at Ithe ends of the narrow centerpiece 18 into the channels 119 .and 20 shown in Fig. 6. rThe outer ends of portions 116 and e137 are separated by the notches 21 which allows the end pieces Z2 and 23 to be folded up -and welded or riveted to the back ofthe faceplate. Slots 211 provide recesses in which the arms 10 and levers 9 reach into contact the bolt.
  • This strap forms a guide for the sliding bolt 214 and an. abutment for rthe coil spring 25 that stresses the bolt to ⁇ cause its -bevelled' head to project from the face plate.
  • the outer end 7 and the lever 5v abutting against the latch body, notches 30 are stopped in closed position.
  • the open end of the U- latch body provides clearance 29 to permit the tingers to pass under the end of the lever to pull it out. This swings the a-rm 10 against the roll 4back 27 :and retracts lthe bolt.
  • the lever is of the lirst order and is fulcrumed at a point midway the power end of the load end.
  • the front end of the lever extends quite a distance in front of the fulcrum so that this end may be easily pressed i-n to operate ⁇ the lever by pushing as contradistinguished from taking a hold of the rear end and pulling.
  • this arrangement provides a llush lever that may be operated at either end to open the door.
  • the latch casing and operating lever lie close to the door .and the latch body appears much like an extended watch casing-about double the width of the normal watch casing. This provides a neat and pleasing appearance.
  • A-n alternative form of the latch shown in Figs. 8- 1l, inclusive embodies the same general form but here the .two latch casings may be applied to the -tWo sides of the door with two screws.
  • Each latch casing is provided with two cylindrical bosses 32. These bosses are substantially all -inset from the periphery of the opening 33 in the latch inner house and the mortise in the wood door. Consequently, two 4long bolts 34 can be used .'to secure the two latch casings to the door.
  • 'A latch hav-ing in combination a ⁇ face plate which is arranged to be secured to the face of the door post and provided with an opening, a bolt having a roll back, a bolt guide for the bolt secured to the face plate, a spring in the yguide for normally projecting the bolt through the face plate, a latch body open at the rear e-nd in which the bolt guide is secured and which has an open area and can -be secured to the door and stand out therefrom around and over an opening in the door, the said latch body provided with journal bearings and a push Iand a pla-tedike pull lever .accessible in the rear lwhere the latch body is open, said lever provided with pintles Iiitting into the journal lbearings to mount the lever in and till the open area of the body to swing in and out, .a-n arm on the inside of the lever having a-n end bearing against the roll back to withdraw the bolt, the said pintles being -latch body is a casting in the form of a bev
  • a latch bolt guide comprising, a face plate and a piece of strap metal notched midway its length to provide a narrow center piece and notched near the ends to -provide end pieces, the portions intervening ybetween the end notches being slotted for the reception of the arm that contacts the roll back of the bolt, the intermediate portions being formed into channels and the end portions folded at right angles to contact the face plate with channel portions being folded over to substantially abut and -the'folded up end portions being secured to the rear of the face plate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Securing Of Glass Panes Or The Like (AREA)

Description

H. M. MARKO DOOR LATCH Sept. 25, 1956 3 Sheets-Sheet 1 Filed Nov. l0, 1954 l/rlcw/ Sept. 25, 1956 H. M. MARKO 2,764,440
DOOR LATCH Filed Nov. 1o,l 1954 s sheets-sheet 2 INVENTOR. HAROLD M. MAP/ 0 ATTORNEYS.
Sept. 25, 1956 H. M. MARKO DOOR LATCH 3 Sheets-Sheet 3 Filed Nov. lO, 1954 O 4 M T NA v m Hw A y. W
United States Patent DOOR LATCH Harold M. Marko, Birmingham, Mich., `'assignor to Soss Manufacturing Company, Detroit, Mich., a corporation of Maine Application November 10, 1954, Serial No. 467,988
8 Claims. (Cl. 292-173) This invention relates to flush latches, especially latches for cabinets and house doors. y
'It is ,the object `of the invention to provide a latch which is substantially ilush with the face of the door but which `can be operated by a push or pull lever which, when it rests, is substantially flush with the Itace of the latch body.
This piece of hardware is very simple in construction and involves only a few easily manufactured parts. When installed on a door it presents a very good appearance.
'Referring Ito the drawings:
Fig. lis a front elevation of the latch.
lFig. 2 is a section taken on the line 2-2 of Fig. 1.
IFig. 3 is a section taken on line 3-*3 Iof Fig. 1 and showin-g an end elevation of the latch.
Fig. 4 is a fragmentary View of the edge of a door showing the latches and `the face plate installed.
Fig. '5 is an elevation of the bolt assembly.
Fig. 6 is a section taken on the line 6-6 of Fig. 5.
Fig. 7 is a plan View of the stamping of which the bol-t guide is made.
Fig. 8 is an elevation of an alternative form of latch.
'Fig 9 is across section on line '-9-9 of Fig. 8.
Fig. l() is an end elevation of the latch taken on the line 10-10 of Fig. 8.
Fig 11 is a cross section taken on line 21'1-11'1 of Fig. 8.
The latch body 1 is located in door by bosses 2 and 3 in mounting aperture I4 and secured to the door by screws l5. These screws '5 pass through the bosses or spurs f8 which `are part of the latch body casting. These angular bosses `are provided -so that the screws can be driven obliquely into the door. The reason for this is to make it possible .to reach the screws with a screw driver when the latch lever is raised.
This casting forms on the outside a bevelled U escutcheon. The ends of the U are chamfered at 28 in the same way that the legs of the U and the bottom of the U are chamfered. This U is here shown as 4rect-angular but it may be other shape. -The U aords a large space which the platelike lever 9 covers and in which it functions. The plate-like lever extends beyond the chamfered ends 2-8 of the U to provide space to grasp the lever. bevelled and chamfered U escutcheon with the plate-like lever, completely filling the `opening in the U, forms a very pleasing piece of hardware to attach to a house or cabinet door. It has a novel appearance and appeal in contrad'istinction to the conventional door knob and escutcheon.
T he latch body is provided with journal bearings 6 in which the pintle 7 supported on collars 7a of the latch lever 9 engage so that the lever is free to swing. IThis lever has arm 10, which is L-shaped, and part of a casting which, when assembled, reaches into the slot 11 in the bolt guide #12.
The face plate 13 is secured to the edge of the door by screws 14. This face plate has attached to the back,
This i 2` bent ends 115 -of the bolt guide liz-either welded` or hollow rivets formed by screw holes.
The bolt guide is made of one stamping, which is shown in its ilat form in Fig. 7. This stamping is subjected to punch and die operations to form the two por tions 16 and 17 at Ithe ends of the narrow centerpiece 18 into the channels 119 .and 20 shown in Fig. 6. rThe outer ends of portions 116 and e137 are separated by the notches 21 which allows the end pieces Z2 and 23 to be folded up -and welded or riveted to the back ofthe faceplate. Slots 211 provide recesses in which the arms 10 and levers 9 reach into contact the bolt.
This strap forms a guide for the sliding bolt 214 and an. abutment for rthe coil spring 25 that stresses the bolt to `cause its -bevelled' head to project from the face plate. The outer end 7 and the lever 5v abutting against the latch body, notches 30 are stopped in closed position.
lThe open end of the U- latch body provides clearance 29 to permit the tingers to pass under the end of the lever to pull it out. This swings the a-rm 10 against the roll 4back 27 :and retracts lthe bolt. The lever is of the lirst order and is fulcrumed at a point midway the power end of the load end. The front end of the lever extends quite a distance in front of the fulcrum so that this end may be easily pressed i-n to operate `the lever by pushing as contradistinguished from taking a hold of the rear end and pulling. Hence, this arrangement provides a llush lever that may be operated at either end to open the door.
The latch casing and operating lever lie close to the door .and the latch body appears much like an extended watch casing-about double the width of the normal watch casing. This provides a neat and pleasing appearance. There is a latch body and latch lever plate on each side of the door. The .parts .are interchangeable so only one set of dies is required to make Ithe parts for the inside of the door and lfor the outside of the door.l
A-n alternative form of the latch shown in Figs. 8- 1l, inclusive, embodies the same general form but here the .two latch casings may be applied to the -tWo sides of the door with two screws. Each latch casing is provided with two cylindrical bosses 32. These bosses are substantially all -inset from the periphery of the opening 33 in the latch inner house and the mortise in the wood door. Consequently, two 4long bolts 34 can be used .'to secure the two latch casings to the door.
What I claim is:
1. 'A latch hav-ing in combination a `face plate which is arranged to be secured to the face of the door post and provided with an opening, a bolt having a roll back, a bolt guide for the bolt secured to the face plate, a spring in the yguide for normally projecting the bolt through the face plate, a latch body open at the rear e-nd in which the bolt guide is secured and which has an open area and can -be secured to the door and stand out therefrom around and over an opening in the door, the said latch body provided with journal bearings and a push Iand a pla-tedike pull lever .accessible in the rear lwhere the latch body is open, said lever provided with pintles Iiitting into the journal lbearings to mount the lever in and till the open area of the body to swing in and out, .a-n arm on the inside of the lever having a-n end bearing against the roll back to withdraw the bolt, the said pintles being -latch body is a casting in the form of a bev-elled escutchcon U shape and in which the lever is -a at plate-like member complet-ely 'lling the space inside the U and Hush with the top of the escutcheon.
`6. The combination claimed in claim 5 in which the ends of the U are chamfered .at the same angle of the 'bevel `in the escutcheon `and in which the lever plate extends beyond the chamfered ends of the U -to afford free space for the insertion of the igures to lift the lever.
7'. A latch bolt guide comprising, a face plate and a piece of strap metal notched midway its length to provide a narrow center piece and notched near the ends to -provide end pieces, the portions intervening ybetween the end notches being slotted for the reception of the arm that contacts the roll back of the bolt, the intermediate portions being formed into channels and the end portions folded at right angles to contact the face plate with channel portions being folded over to substantially abut and -the'folded up end portions being secured to the rear of the face plate.
8. The combination claimed in claim 3 in -which there are two latch casings secured on opposite sides of the door by means of one casting having two bosses with openings and the other two interiorly threaded bosses at the forward side of the openings through the castings and two long bolts secure both castings to the door by means of passing through the two bosses of one casting and screwing into the threaded openings in the other casting.
References Cited in the file of this patent UNITED STATES PATENTS Mack Aug. 18,
US467988A 1954-11-10 1954-11-10 Door latch Expired - Lifetime US2764440A (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2970856A (en) * 1958-07-18 1961-02-07 Leon F Hansen Door latch
US3280761A (en) * 1965-03-26 1966-10-25 Evans Prod Co Bulkhead handle assembly
US3955837A (en) * 1975-01-20 1976-05-11 Christensen Lars N Latch
US4677834A (en) * 1985-08-07 1987-07-07 Hicks Cecil B Electro-mechanical security lock
US20040119294A1 (en) * 2002-12-20 2004-06-24 Yong Tai Loong (Pte) Ltd. Locking mechanism
US20060255596A1 (en) * 2005-05-10 2006-11-16 Teng-Long Yong Flush handle latch mechanism
US20110074169A1 (en) * 2009-09-30 2011-03-31 Hon Hai Precision Industry Co., Ltd. Locking apparatus for locking hard disk to electronic device
US20120013134A1 (en) * 2009-03-31 2012-01-19 Applied Concepts Aircraft Solutions, Inc. Two Assembly Parts Latch System
US20120167476A1 (en) * 2007-08-20 2012-07-05 Weinerman Lee S Armored vehicle door hardware providing access, egress, rescue and security
US20140326721A1 (en) * 2011-09-29 2014-11-06 Shanghai Hongyan Returnable Transit Packagings Co., Ltd. Locking system applicable in large container

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US231223A (en) * 1880-08-17 Knob attachment
US756447A (en) * 1901-02-26 1904-04-05 Theodor Von Wobeser Door-handle shield.
US1989801A (en) * 1933-06-26 1935-02-05 Halinka George Doorlatch
US2238314A (en) * 1939-05-12 1941-04-15 Independent Lock Co Lock mechanism for doors
US2348065A (en) * 1943-02-08 1944-05-02 Harry F George Flush type door handle
US2542130A (en) * 1947-06-17 1951-02-20 Carl F Friend Lock set for doors
US2642300A (en) * 1951-03-14 1953-06-16 Eastern Malleable Iron Company Flush type door lock
US2649322A (en) * 1946-05-20 1953-08-18 Mack Grant Flush door latching mechanism

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US231223A (en) * 1880-08-17 Knob attachment
US756447A (en) * 1901-02-26 1904-04-05 Theodor Von Wobeser Door-handle shield.
US1989801A (en) * 1933-06-26 1935-02-05 Halinka George Doorlatch
US2238314A (en) * 1939-05-12 1941-04-15 Independent Lock Co Lock mechanism for doors
US2348065A (en) * 1943-02-08 1944-05-02 Harry F George Flush type door handle
US2649322A (en) * 1946-05-20 1953-08-18 Mack Grant Flush door latching mechanism
US2542130A (en) * 1947-06-17 1951-02-20 Carl F Friend Lock set for doors
US2642300A (en) * 1951-03-14 1953-06-16 Eastern Malleable Iron Company Flush type door lock

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2970856A (en) * 1958-07-18 1961-02-07 Leon F Hansen Door latch
US3280761A (en) * 1965-03-26 1966-10-25 Evans Prod Co Bulkhead handle assembly
US3955837A (en) * 1975-01-20 1976-05-11 Christensen Lars N Latch
US4677834A (en) * 1985-08-07 1987-07-07 Hicks Cecil B Electro-mechanical security lock
US20040119294A1 (en) * 2002-12-20 2004-06-24 Yong Tai Loong (Pte) Ltd. Locking mechanism
US20060255596A1 (en) * 2005-05-10 2006-11-16 Teng-Long Yong Flush handle latch mechanism
US20120167476A1 (en) * 2007-08-20 2012-07-05 Weinerman Lee S Armored vehicle door hardware providing access, egress, rescue and security
US8465062B2 (en) * 2007-08-20 2013-06-18 The Eastern Company Armored vehicle door hardware providing access, egress, rescue and security
US8844982B2 (en) 2007-08-20 2014-09-30 The Eastern Company Armored vehicle door hardware providing access, egress, rescue and security
US20120013134A1 (en) * 2009-03-31 2012-01-19 Applied Concepts Aircraft Solutions, Inc. Two Assembly Parts Latch System
US8534718B2 (en) * 2009-03-31 2013-09-17 The Young Engineers, Inc. Two assembly parts latch system
US8770634B2 (en) 2009-03-31 2014-07-08 The Young Engineers, Inc. Two assembly parts latch system
US20110074169A1 (en) * 2009-09-30 2011-03-31 Hon Hai Precision Industry Co., Ltd. Locking apparatus for locking hard disk to electronic device
US8424931B2 (en) * 2009-09-30 2013-04-23 Hon Hai Precision Industry Co., Ltd. Locking apparatus for locking hard disk to electronic device
US20140326721A1 (en) * 2011-09-29 2014-11-06 Shanghai Hongyan Returnable Transit Packagings Co., Ltd. Locking system applicable in large container
US9321587B2 (en) * 2011-09-29 2016-04-26 Shanghai Hongyan Returnable Transit Packagings Co., Ltd. Locking system applicable in large container

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