US891887A - Latch for movable lids. - Google Patents

Latch for movable lids. Download PDF

Info

Publication number
US891887A
US891887A US1907375219A US891887A US 891887 A US891887 A US 891887A US 1907375219 A US1907375219 A US 1907375219A US 891887 A US891887 A US 891887A
Authority
US
United States
Prior art keywords
cover
latch
casing
stem
motor
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
Inventor
John E Wallace
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US1907375219 priority Critical patent/US891887A/en
Application granted granted Critical
Publication of US891887A publication Critical patent/US891887A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • E05C1/02—Fastening devices with bolts moving rectilinearly without latching action
    • E05C1/04—Fastening devices with bolts moving rectilinearly without latching action with operating handle or equivalent member rigid with the bolt
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B65/00—Locks or fastenings for special use
    • E05B65/08—Locks or fastenings for special use for sliding wings
    • E05B65/0864—Locks or fastenings for special use for sliding wings the bolts sliding perpendicular to the wings
    • 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
    • Y10T292/0863—Sliding and rotary
    • 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
    • Y10T292/0863—Sliding and rotary
    • Y10T292/0867—Spring projected

Definitions

  • the resent invention relates to an im proved atch or clamp for holding a movable id or cover in position.
  • the latch is intended primarily for use in connection with the movable cover or lid of the casing of a railway electric motor, but is also capable of use in other relations.
  • a railway electric motor is provided with a casing which completely incloses the motor except for an opening above the commutator through which access may be had to the commutator and brushes.
  • This open ing is closed by means of a cover or lid hinged at one end, and secured at the other end by a clamping device.
  • This clamping device as heretofore constructed has proved unsatisfactory and unreliable, the vibrations of the motor casing often causing the latch to be displaced so as to release the cover and per mit the cover to be thrown upwardly so as to expose the commutator and brushes.
  • the release of the cover by the latch not only leaves the commutator and brushes unprotected, but permits the cover to move in such a manner that it is often broken or torn from its hinges.
  • the failure of the latch to properly hold the cover is particularly n0- ticeable when the latch becomes worn by use.
  • the object of the present invention is to provide a latch or clamp which will securely hold the cover of the motor casing in position regardless of the amount of the vibration of the motor casing, and regardless of the amount of wear produced in use either of the latch or of the portion of the cover with which it engages.
  • FIG. 1 is a perspective view of a portion of an electric railway motor with the referred form of the present invention app ied thereto;
  • Fig. 2 is a detail View in side eleva' tion of the cover or lid of the motor and the improved latch for holding the cover in position, a portion of the casing of the motor being shown in section;
  • Fig. 3 is a plan view of the cover and latch illustrated in Fig. 2.
  • 1 indicates the casing of the motor, of wellknown construction, and 2 the cover plate which closes the opening through which access is had to the commutator and brushes.
  • the cover is provided at one end with the usual lugs 3 by which it is hinged to a projection on the motor casing by a pin 4.
  • the cover is provided with a slot 5 through which the stem of the latch passes, and with projections 6 upon its upper surface which cooperate with the horizontal arm of the latch to hold the cover in position, as will be hereinafter explained.
  • the improved latch illustrated in the drawings consists of a cylindrical bolt or stem 7 provided at its upper end with a horizontally projecting arm 8.
  • the stem 7 is mounted to rotate and slide longitudinally in a horizontal portion of the casing as illustrated in Fig. 2, which ortion of the casing supports the free end 0' the cover 2 when the cover is in position over the opening in the casing.
  • the stem 7 is arranged to pass through the slot 5 in the free end of the cover, and the arm 8 is arranged to engage the upper surface of the cover between the projections 6, which rojections, when the cover and latch are in t 1e position illustrated in the drawing, hold the latch against rotation.
  • the stem 7 At its lower end the stem 7 is provided with a nut 9 which is locked in position by a pin 10 passing through the stem below the nut, and between the nut and the casing a spring 11 is coiled around the stem.
  • the spring 11 acts to force the stem 7 downwardly, so that the arm 8 is pressed firmly against the upper surface of the cover and the cover is held securely in place, regardless of the vibrations of the motor casing.
  • the spring also acts automatically to compensate for any wear either of the latch or of the cover.
  • the cover can be readily released by raising the latch and rotating it through a half revolu- I tion, a ring 12 mounted in an upward rojection from the arm 8 being provided or this urpose.

Description

N0. 891,887. PATENTED JUNE 30, 1908. J. E. WALLACE.
LATGH FOR MOVABLE LIDS.
APPLICATION FILED MAY 23- 1907.
l/l/ITNESSES //v VEN 70/? JOHN E. WALLACE, OF WOBURN, MASSACHUSETTS.
LATCH FOR MOVABLE LIDS.
Specification of Letters Patent.
Patented June 30, 1908.
Application filed May 23, 1907. Serial No. 375,219.
To all whom it may concern:
Be it known that I, JOHN E. WALLAcE, citizen of the United States, residing at Woburn, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Latches for Movable Lids; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.
The resent invention relates to an im proved atch or clamp for holding a movable id or cover in position. The latch is intended primarily for use in connection with the movable cover or lid of the casing of a railway electric motor, but is also capable of use in other relations.
A railway electric motor is provided with a casing which completely incloses the motor except for an opening above the commutator through which access may be had to the commutator and brushes. This open ing is closed by means of a cover or lid hinged at one end, and secured at the other end by a clamping device. This clamping device as heretofore constructed has proved unsatisfactory and unreliable, the vibrations of the motor casing often causing the latch to be displaced so as to release the cover and per mit the cover to be thrown upwardly so as to expose the commutator and brushes. The release of the cover by the latch not only leaves the commutator and brushes unprotected, but permits the cover to move in such a manner that it is often broken or torn from its hinges. The failure of the latch to properly hold the cover is particularly n0- ticeable when the latch becomes worn by use.
The object of the present invention is to provide a latch or clamp which will securely hold the cover of the motor casing in position regardless of the amount of the vibration of the motor casing, and regardless of the amount of wear produced in use either of the latch or of the portion of the cover with which it engages.
With this object in View, the invention consists in the devices and combinations of devices hereinafter described and claimed, the advantages of which will be obvious to those skilled in the art from the following description.
The present invention will be clearly understood from an ins ection of the accompanying drawing, in which Figure 1 is a perspective view of a portion of an electric railway motor with the referred form of the present invention app ied thereto; Fig. 2 is a detail View in side eleva' tion of the cover or lid of the motor and the improved latch for holding the cover in position, a portion of the casing of the motor being shown in section; and Fig. 3 is a plan view of the cover and latch illustrated in Fig. 2.
1 indicates the casing of the motor, of wellknown construction, and 2 the cover plate which closes the opening through which access is had to the commutator and brushes. The cover is provided at one end with the usual lugs 3 by which it is hinged to a projection on the motor casing by a pin 4. At
its other end the cover is provided with a slot 5 through which the stem of the latch passes, and with projections 6 upon its upper surface which cooperate with the horizontal arm of the latch to hold the cover in position, as will be hereinafter explained.
The improved latch illustrated in the drawings consists of a cylindrical bolt or stem 7 provided at its upper end with a horizontally projecting arm 8. The stem 7 is mounted to rotate and slide longitudinally in a horizontal portion of the casing as illustrated in Fig. 2, which ortion of the casing supports the free end 0' the cover 2 when the cover is in position over the opening in the casing. The stem 7 is arranged to pass through the slot 5 in the free end of the cover, and the arm 8 is arranged to engage the upper surface of the cover between the projections 6, which rojections, when the cover and latch are in t 1e position illustrated in the drawing, hold the latch against rotation. At its lower end the stem 7 is provided witha nut 9 which is locked in position by a pin 10 passing through the stem below the nut, and between the nut and the casing a spring 11 is coiled around the stem. The spring 11 acts to force the stem 7 downwardly, so that the arm 8 is pressed firmly against the upper surface of the cover and the cover is held securely in place, regardless of the vibrations of the motor casing. The spring also acts automatically to compensate for any wear either of the latch or of the cover. The cover can be readily released by raising the latch and rotating it through a half revolu- I tion, a ring 12 mounted in an upward rojection from the arm 8 being provided or this urpose.
It will be understood that the latch illustrated in the drawing and above specifically described embodies the present invention in its preferred form, but that the invention may be otherwise embodied as defined in the claims. It will also be understood that While the invention has been illustrated and described as applied to the cover plate of the casing of a railway motor, it may also be used in other relations.
The invention having been thus described, what is claimed is j 1. The combination with a cover plate provided with projections extending from its upper surface, of a latch consisting of a longitudinally movable and rotatable stem, and an arm projecting therefrom and arranged to engage the u per surface of the cover plate'between saic projections, and a spring acting on the stem to force the arm into en agement with the cover plate, substantially as described.
2. The combination with the casing of an electric railway motor, of a cover plate hinged at one end thereto and provided at its other end with a slot and with projections from its up er surface, a latch consisting of a longitudina ly movable and rotatable stem arranged to pass through the slot in the cover,
and an arm projecting from the stem ar ranged to engage the upper surface of the cover between said projections, and a spring acting on the stem to force the arm into engagement with the cover, substantially as described.
In testimony whereof I affix my signature, in presence of two witnesses.
JOHN E. WALLACE. Witnesses:
A. Orrs SMITH, WM. B. DARLING.
US1907375219 1907-05-23 1907-05-23 Latch for movable lids. Expired - Lifetime US891887A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US1907375219 US891887A (en) 1907-05-23 1907-05-23 Latch for movable lids.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1907375219 US891887A (en) 1907-05-23 1907-05-23 Latch for movable lids.

Publications (1)

Publication Number Publication Date
US891887A true US891887A (en) 1908-06-30

Family

ID=2960318

Family Applications (1)

Application Number Title Priority Date Filing Date
US1907375219 Expired - Lifetime US891887A (en) 1907-05-23 1907-05-23 Latch for movable lids.

Country Status (1)

Country Link
US (1) US891887A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2638729A (en) * 1949-09-23 1953-05-19 Bourg Alex Wheel supporting spindle for rotating cutting reel type mowers
US2895142A (en) * 1955-11-03 1959-07-21 Nagel Ernest Portable toilet device
US3167222A (en) * 1962-05-07 1965-01-26 North American Car Corp Hopper car

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2638729A (en) * 1949-09-23 1953-05-19 Bourg Alex Wheel supporting spindle for rotating cutting reel type mowers
US2895142A (en) * 1955-11-03 1959-07-21 Nagel Ernest Portable toilet device
US3167222A (en) * 1962-05-07 1965-01-26 North American Car Corp Hopper car

Similar Documents

Publication Publication Date Title
US815537A (en) Sash-fastener.
US891887A (en) Latch for movable lids.
US1091644A (en) Door-latch.
US1110628A (en) Door-check.
US780951A (en) Sash-lock.
US985933A (en) Tub-cover fastener.
US965125A (en) Latch.
US712270A (en) Door-holder.
US1022488A (en) Device for locking whips in sockets.
US510776A (en) Sash-fastener
US870216A (en) Door-check.
US517226A (en) Sash-securing device
US681291A (en) Rope or wire stretcher.
US983432A (en) Latch.
US1075828A (en) Sash-lock.
US932886A (en) Safety-stirrup.
US906380A (en) Door-holder.
US879137A (en) Car-axle-box lid.
US515167A (en) Door-securer
US1222171A (en) Turning plug.
US1044122A (en) Car journal-box.
US1067717A (en) Casing-cover and locking mechanism therefor.
US532187A (en) Nathan rubenstein
US565983A (en) August s
US652982A (en) Door-check.