US1704A - Improvement in the construction of the common thumb-latch - Google Patents

Improvement in the construction of the common thumb-latch Download PDF

Info

Publication number
US1704A
US1704A US1704DA US1704A US 1704 A US1704 A US 1704A US 1704D A US1704D A US 1704DA US 1704 A US1704 A US 1704A
Authority
US
United States
Prior art keywords
latch
construction
door
thumb
improvement
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
Publication date
Application granted granted Critical
Publication of US1704A publication Critical patent/US1704A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05CBOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C3/00Fastening devices with bolts moving pivotally or rotatively
    • E05C3/12Fastening devices with bolts moving pivotally or rotatively with latching action
    • 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
    • Y10T292/00Closure fasteners
    • Y10T292/08Bolts
    • Y10T292/1043Swinging
    • Y10T292/1063Gravity actuated
    • Y10T292/1064Operating means
    • Y10T292/107Lever

Definitions

  • Figures l and 2 are perspective views ofthe improved thumb-latch as it appears on thetwo sides of the door, respecively.
  • A is the handle, which is hollowed out on the outside, as shown by the horizontal section B, in order to combine lightness with strength, and with a sufiicient degree of breadth and curvature to feel pleasant to the hand.
  • C is the base or plate of the handle, having a notch or slit in its upper edge to receive the shank of the thumb piece D, which rests upon the bottom of this slit, constituting its fulcru 1n, and is kept down upon the fulcrum by the wood at the top of the mortise in the door through which the shank passes.
  • Fig. 3 is a side View of the thumb-piece, showing at E a section of the latch resting upon its shank and at F a part of a section of the plate of the handle, the red lines showing a section of the door and of the mortise through it, to receive the shank of the thumbpiece.
  • the shank G of the thumb-piece is crooked or offset downward immediately behind the handle-plate, as shown in the ligure, to prevent it from moving' endwise towardthe handle, while its head or concave plate H, extending laterally each way on the other side of the same plate prevents its moving in the other direction.
  • the offset of the shank is also designed to form a stop to prevent it from lfalling too low when the mortise through the door is cnt too low to stop it, also to bring the point where the latch bears upon it on a level with the fulcrum.
  • I is the latch, which is ribbed on the outside, as shown by the section of it at E, Fig. 3, in order to combine neatness, lightness, and strength. of the end of the latch, which is partly concealed by the pivot-plate.
  • L is the pivotplate. This is a circular piece Whose central partv is elevated from the surface of the door, forming a cavity beneath it.
  • Fig. 4 is a section of the pivot-plate through I the opening, showing the end of the latch in its place with the screw passing through it.
  • N N is the staple, of which Fig. 5 is a 10ngitudinal and Fig. 6 a transverse section.
  • the bar O governs the latch on the outside, and the two bars PP support and fur it from the door on the other side. These bars, as shown in the figures, are so arranged that the bar O shall not be immediately over or opposite to either of the others, by which arrangement it is made susceptible of being easily and neatly cast in a single piece, furnishing a guide and support for the latch on both sides.
  • One of the two bars P P might be dispensed with, but with some sacrifice of symmetry and neatness.
  • R is the catch, which is partly concealed in the rabbet of the door-post.
  • Fig. 7 is a side View of the catch, showing the whole of it. It is aplate of uniform thickness let into therabbet of the door-post, projectingr a suitable distance beyond it to receive the latch, and secured by two screws; or that. part which receives the screws may be set at ⁇ right angles to the other part, as shown by a. section, Fig. 8, and screwed onto the face of Constructed in either of thesemodes the catch may be brought nearer to' the staple than when made in the usual man-- ner, whereby the strain on the latch is re Jerusalem and its required length diminished, and also such a form may be readily given to the post.

Landscapes

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

Description

AMA PH OTO-LITHO. C0. NX SSSSSSSSSSSSSSSSS UNITED STATES PATENT OFFICE.
PHILOS BLAKE, ELI XV. BLAKE, AND JOHN A. BLAKE, OF NEV HAVEN,
' CONNECTICUT. y
IMPROVEMENT IN THE CONSTRUCTION OF THE COMMON THUMB-LATCH.
Specification forming part of Letters Patent N o. 1,704, dated July 21, 1840.
T0 a/ZZ whom t may concern:
Be it known that we, PHILos BLAKE, ELI W. BLAKE, and JOHNA. BLAKE, of New Haven in the county of New Haven and State of Connecticut, have invented new and useful Improvements in the Construction of the Common Thumb-Latch, sometimes called the Norfolk Latch and we do hereby declare that the following is a full and exact description thereof.
Ourimprovements consist chiefly in certain modifications of the form and structure of the sev-eral parts of the latch with a view to combine greater ncatness of appearance with a susceptibility of being' more cheaply manufactured.
Figures l and 2 are perspective views ofthe improved thumb-latch as it appears on thetwo sides of the door, respecively. A is the handle, which is hollowed out on the outside, as shown by the horizontal section B, in order to combine lightness with strength, and with a sufiicient degree of breadth and curvature to feel pleasant to the hand. C is the base or plate of the handle, having a notch or slit in its upper edge to receive the shank of the thumb piece D, which rests upon the bottom of this slit, constituting its fulcru 1n, and is kept down upon the fulcrum by the wood at the top of the mortise in the door through which the shank passes.
Fig. 3 is a side View of the thumb-piece, showing at E a section of the latch resting upon its shank and at F a part of a section of the plate of the handle, the red lines showing a section of the door and of the mortise through it, to receive the shank of the thumbpiece. The shank G of the thumb-piece is crooked or offset downward immediately behind the handle-plate, as shown in the ligure, to prevent it from moving' endwise towardthe handle, while its head or concave plate H, extending laterally each way on the other side of the same plate prevents its moving in the other direction. The offset of the shank is also designed to form a stop to prevent it from lfalling too low when the mortise through the door is cnt too low to stop it, also to bring the point where the latch bears upon it on a level with the fulcrum. I is the latch, which is ribbed on the outside, as shown by the section of it at E, Fig. 3, in order to combine neatness, lightness, and strength. of the end of the latch, which is partly concealed by the pivot-plate. L is the pivotplate. This is a circular piece Whose central partv is elevated from the surface of the door, forming a cavity beneath it. Through the sloped side of the elevated part is an opening into the cavity ofsuflicient size to permit the pivot end of the latch to pass freely in. Through the top of the elevated post and at its center is va hole fora common Wood-screw, which screw passes through the end of the latch, constituting its pivot, and, screwing into the door. firmly secures the plate, while it leaves the latch at liberty to play with perfect freedom. At the same time the outer rim of the plate at M, being beneath the latch, furs it oif from the door to prevent it chaflng the paint.
' Fig. 4 is a section of the pivot-plate through I the opening, showing the end of the latch in its place with the screw passing through it.
N N is the staple, of which Fig. 5 is a 10ngitudinal and Fig. 6 a transverse section. The bar O governs the latch on the outside, and the two bars PP support and fur it from the door on the other side. These bars, as shown in the figures, are so arranged that the bar O shall not be immediately over or opposite to either of the others, by which arrangement it is made susceptible of being easily and neatly cast in a single piece, furnishing a guide and support for the latch on both sides. One of the two bars P P might be dispensed with, but with some sacrifice of symmetry and neatness. R is the catch, which is partly concealed in the rabbet of the door-post.
Fig. 7 is a side View of the catch, showing the whole of it. It is aplate of uniform thickness let into therabbet of the door-post, projectingr a suitable distance beyond it to receive the latch, and secured by two screws; or that. part which receives the screws may be set at` right angles to the other part, as shown by a. section, Fig. 8, and screwed onto the face of Constructed in either of thesemodes the catch may be brought nearer to' the staple than when made in the usual man-- ner, whereby the strain on the latch is re duced and its required length diminished, and also such a form may be readily given to the post.
that part which projects from the post to rel ceive the latch as will prevent it from catchL ing and tearing clothes.
4In the construction of the thu mb-latch, as above described we claim as our invention, and wish to secure by Letters Patent, the following particulars, to wit:
l. The inserting the shank of the thumbpiece in a slit or notch instead of a mortise in the handle-plate, combined Vwith the resting it upon the lower end of that slit as a fulcrum, as herein described. i
2. The resting of the thun1b-piece upon its lower edge as a fulcrum, combined with the inode of confining it to its place on that fulerum, as hereiny described-to wit, bythe wood at the upper end of `the mortise through the door.
3. The crooking or offsetting the shank of the thumb'- piecedownward, as herein set forth, for the purpose of forming a shoulder uponits lower edgeto rest against the hack side of the handle-plate and to bring the bearing of the latch upon it'inore nearly on a level with thefulcrum.
4. ,The modeherein described of making and securing the pivot-plate-that is to say,
making it hollow with an opening on one side for the latch to pass through and `Securing it by a screw, which at the same timel passes at right angles to be screwed on the face of f the door-post, thereby allowing it in either` case to stand in a line with or close to said l rabhet, and consequently admitting ot' theI shortening of the projecting end of the latch.
PI'IILOS BLAKE. ELI W. BLAKE. J OI-IN A. BLAKE.
Witnesses:
JOHN NIsBET'r, AMos E. STRONG.
US1704D Improvement in the construction of the common thumb-latch Expired - Lifetime US1704A (en)

Publications (1)

Publication Number Publication Date
US1704A true US1704A (en) 1840-07-21

Family

ID=2061991

Family Applications (1)

Application Number Title Priority Date Filing Date
US1704D Expired - Lifetime US1704A (en) Improvement in the construction of the common thumb-latch

Country Status (1)

Country Link
US (1) US1704A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110024067A1 (en) * 2009-06-16 2011-02-03 International Paper Company Anti-Microbial Paper Substrates Useful in Wallboard Tape Applications
US20110030908A1 (en) * 2009-08-05 2011-02-10 International Paper Company Composition Containing A Cationic Trivalent Metal And Debonder And Methods Of Making And Using The Same To Enhance Fluff Pulp Quality
US20110108227A1 (en) * 2009-08-05 2011-05-12 International Paper Company Process For Applying Composition Containing A Cationic Trivalent Metal And Debonder And Fluff Pulp Sheet Made From Same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110024067A1 (en) * 2009-06-16 2011-02-03 International Paper Company Anti-Microbial Paper Substrates Useful in Wallboard Tape Applications
US20110030908A1 (en) * 2009-08-05 2011-02-10 International Paper Company Composition Containing A Cationic Trivalent Metal And Debonder And Methods Of Making And Using The Same To Enhance Fluff Pulp Quality
US20110108227A1 (en) * 2009-08-05 2011-05-12 International Paper Company Process For Applying Composition Containing A Cationic Trivalent Metal And Debonder And Fluff Pulp Sheet Made From Same

Similar Documents

Publication Publication Date Title
US1704A (en) Improvement in the construction of the common thumb-latch
US67549A (en) Improvement in bolts
US304203A (en) Combined lock and alarm
US401832A (en) Handle
US1854A (en) smith and benjamin mulliken
US184184A (en) Improvement in door-bolts
US445532A (en) Flush hinge portables
US232269A (en) hastings
US197695A (en) Improvement in door-fastenings
US5375A (en) James haggart
US4862A (en) Fastening-latch
US1198641A (en) Interchangeable lever-latch.
US132028A (en) Improvement in fastenings for drawers
US3611A (en) Mode of operating sprim-bolts in door-fastenings
US148785A (en) Improvement in knob-latches
US1626A (en) Spring-bolt for door and other locks
US432178A (en) Door-fastening
US59378A (en) Improvement in gates
US3210A (en) Mill-saw gruide
US803723A (en) Carpenter's and joiner's folding square.
US108534A (en) Improvement in devices for holding open doors
US97024A (en) Improved key-guard
US82108A (en) goewey
US237980A (en) Case for musical instruments
US205853A (en) Improvement in gates