US920478A - Door-latch. - Google Patents

Door-latch. Download PDF

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Publication number
US920478A
US920478A US1908446586A US920478A US 920478 A US920478 A US 920478A US 1908446586 A US1908446586 A US 1908446586A US 920478 A US920478 A US 920478A
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US
United States
Prior art keywords
door
latch
pendant
rod
projecting
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
William Keating
Original Assignee
William Keating
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
Priority to US42621808A priority Critical patent/US920477A/en
Application filed by William Keating filed Critical William Keating
Priority to US1908446586 priority patent/US920478A/en
Application granted granted Critical
Publication of US920478A publication Critical patent/US920478A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B83/00Vehicle locks specially adapted for particular types of wing or vehicle
    • E05B83/16Locks for luggage compartments, car boot lids or car bonnets
    • E05B83/24Locks for luggage compartments, car boot lids or car bonnets for car bonnets
    • E05B83/243Hood clamps, i.e. individually actuated, usually yielding hooks
    • 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
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S292/00Closure fasteners
    • Y10S292/46Sliding door fasteners
    • 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
    • Y10T292/0911Hooked end
    • Y10T292/0913Sliding and swinging
    • Y10T292/0914Operating means
    • Y10T292/0918Rigid
    • 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
    • Y10T292/0911Hooked end
    • Y10T292/0926Spring projected
    • Y10T292/0928Operating means
    • Y10T292/0933Push or pull rod

Description

w. KEATINGL DOOR LATCH APPLICATION FILED AUG. 3, 190B.
Patented May 4, 1909.
rut NOIIIJ rl'rlnl 120.. wasluncl'un, D. e.
UNTTEE STATES PATENT @FFTQE.
WILLIAM. KEATING, OF NEW YORK, N. Y.
DOOR-LATCH.
Specification of Letters Patent.
Patented May 4, 1909.
Original application filed April 10, 1908, Serial No. $26,218. Divided and this application filed August 3, 1908. Serial No. 46,586.
To all whom it may concern:
Be it known that 1, WILLIAM KEATING, a citizen of the United States, and a resident of the city of New York, in the county of New York and State of New York, United States of America, have invented. certain new and useful improvements in Door- Latches, of which the following is a specification.
My invention relates to an improved door latch 'which is especially adaptable for use with sliding doors such as are commonly used in conjunction with elevators, and its object is to improve upon devices of this class and to provide a latch which will have no portion projecting beyond the edge of a door when the latter is open.
My invention further consists in an arrangement for causing the movement of the door to actuate the latch mechanism so that its action is automatic.
The invention resides in the construction and arrangement of parts which I will describe in the following s ecification, the novel features of which wil be set forth in appended claims.
in a former application Number 4-2:),218, filed by me on the th of April, 1903, the present invention was disclosed, and the subject-matter of the present application is divided from such prior application.
Referring to the drawing, Figure 1 is a front elevation of a self-closing edgewise movable door with my invention applied thereto. Fig. 2 is a front elevation, on a son-ion hat lar er scale, of the door latch mechanism show. ing its parts in two of their positions. 3 is a similar view of the parts in another of their positions. Fig. 4 is a plan view of the door latch mechanism with the parts in the position in which they are shown in Fig. Fig. 5 is a sectional side elevation of a detail of a frictional actuating device which may be used in conjunction r-iith the other parts of the latch actuating mechanism. 6 is a front elevation of a modified form of the invention.
Like characters of reference designate corresponding parts in all of the figures.
1O designates a sliding door of ordinary construction which is supported upon the rail 11 by means of roller hangers l2 and 13. Aflixed to the door is a horizontally disposed toothed rack 14. An internally threaded for patent, Serial l l 1 l spur-gear 15 is in mesh with this rack at a position at one side of the door opening. The upper and lower surfaces of this gear member are provided with antifriction supporting devices carried by a bracket 16 at fixed to a holding block 17 upon the door frame at one side of the door opening.
18 designates a threaded vertical shaft which passes through the internally threaded portion of the gear member so that the latter forms a rotatable nut upon the shaft. This shaft is also supported from the holding block 17. A weight 19 upon one end of this shaft has a tendency to move the shaft donnward.
V3 hen the door is opened the rack 14; will rotate the gear member 15 and the latter will cause the vertical shaft 18 to be moved upward. against the action of gravity. hi hen the door is released the Weight 19 Will force the vertical shaft downward, thus rotating the gear member 15 and causing the latter, by its engagement with the toothed rack, to close the door.
The mechanism which I have thus briefly described is fully set forth in my prior application for patent to which i have above referred.
The latch which I have invented comprises a latch member 20 which is provided'with a slot 21 through which a pin or bolt 22 projects. This pin is aiiixed to the door and supports the latch member both pivot-ally and slidably. 23 designates another slot or opening in the latch member through which another pin or bolt 2% affixed to the door project The upper surface of the opening 23 is horizontal so that'it, with the slot 21, allows the latch member to slide back and forth longitudinally upon the pins 22 and 24 a certain limited amount. At the inner end of opening 23 the latch member is cut away as shown at 25 to form a downwardly extending continuation of opening 23. 26 is a curved cam surface at the juncture of the parts 23 and 25 of this opening.
27 is a portion of the latch member which forms a hook upon its outer end. Its inner end is made in the form shown at 28.
28 is a strap EtfllXQCl to the door and arranged to support the end 28.
29 is a handle aflixed to the latch member 20 or made as an integral projecting part thereof.
30 designates that part of the door frame against which the door is closed. 31 is a latch receiv ng member or catch piece affixed to this portion of the door frame and constructed with a shoulder 32 with which the hook 27 is arranged to engage and with a beveled or grooved portion 33 against which the front end of the hook 27 will strike when the door is being closed.
40 designates a weighted pendant which is pivotally connected with the latch member 20 at 41. A pin 42 which is affixed to the door, passes through a vertical slot 43 in the endant for a purpose which will appear hereinafter.
44 is a horizontally disposed rod pivotally connected with the lower portion of the pendant at 45 and carried across the door and through a fixed bracket 46 through which it is arranged to slide.
47 and 48 are collars afiixed to the rod 44.
The various parts of the invention have been pointed out and I will now proceed with a description of their operation. The hook may be disengaged from the member 31 by being depressed by handle 29. This will cause the latch member to be rotated about the pin 22 until it assumes the position in which it is shown by dotted lines in Fig. 2. From this figure it may be seen that this movement of the latch member will raise the weighted pendant 40 and will cause the portion in which is the opening 25 to be carried up over the pin 24. The slot 43 allows the pendant to make this movement. When in this position the door may be opened and the parts will remain in this position or will resume their first position-that shown in full lines in Fig. 2-until the collar 47 strikes against the bracket 46. The collar and bracket are arranged to arrest further move ment of the rod 44, so that as the door 10 is moved further to complete its opening, the rod 44 will push the lower end of pendant 40 forward. As the pendant is pivoted at 42 this will cause the latch member 20 to be moved back and the parts will then assume the positions in which they are shown in Fig. 3. The latch member will thus be drawn back and in so that little or none of it projects beyond the edge of the door. The weight of the pendant has a tendency to hold the latch member down in horizontal position. If, however, the operator holds the latch member in its tilted position until the rod 44 acts in a manner above described to move it inward the pin 25 engaging with cam surface 26 will push the latchmember down into its horizontal position as the latter moves inward. WVhen the door is again closed the collar 47 will move out of its engagement with the bracket 46 so that the latch member may be moved back into its projecting position. The weight of the pendant 40 has a tendency to produce this result, but in order to insure a positive return of the parts to the desired positions, the collar 48 is provided on the rod 44 and arranged to engage with the bracket 46 just before the door has reached its closed position. This will cause the pendant to be drawn back to its central position and will force the latch member outward. When the latch member comes in contact with the catch 31 its forward rounded end will abut against the bev-- eled or curved surface 33, and these two parts acting together, will depress the forward end of the latch. The pendant which is raised at the same tii'ne and which looks the hook 27 will cause the latter to be raised up behind the shoulder 32 as soon as it. has reached the proper position.
In Fig. 6 another form of my invention is shown. Here the latch member 50 is pivoted at 51 to the member 10. 52 is a knob or handle by means of which the latch member may be depressed to disengage it frotzn the catch-piece 31 on the door fram 30. The rear end 53 of the latch member is heavier than that portion of it which is to the left of the pivot 51, so that this part has a tendency to drop down into the position indicated by dotted lines. A. cam 54 which is pivoted. to the door at 55 is in such a position that it holds up this heavy end of the latch member. The horizontal rod 44 is pivotally attached to the cam below its pivot and is carried across the door and through the bracket 46 as before described. When the door is opened until the collar 47 abuts against the bracket 46 it causes the rod to push the over into the position shown in dotted lines in Fig. 6. This allows the latch n'iember to drop down as shown in this figure so tl at none of it projects beyond the end of the door. In closing the door the parts ren'iain in these new positions until the collar 48 abuts against the bracket 46 and thus arrests further movement of the rod and re turns the cam and latch mexnber to their original positions so that the latter will readily engage with the catch-piece when these two parts are brought together.
By the arrangements above described the latch member is removed from its projecting position when the door is open so that the full width of the door opening available for use without the liability of catching and tearing the clothing thereon.
All of the parts of the latch mechanism, except the knob or handle, are preferably placed inside of the door so that they are out of sight and cannot be tampered with. The various parts of the latch mechanism are for convenience mounted upon. plates so that the mechanism is complete, self-contained and may be attached to any desired door.
In Fig. 5 a frictional device is shown which is arranged to act upon the rod In this figure 6O designates a ball or roller which is held within a guiding member 61. The
lower surface of this guiding member is provided with two planes inclined in opposite directions relative to the upper surface of the rod i l, and the member itself is supported by a bracket (52 which is aifixed to the hold ing plate 17. A spindle 63 projecting upward from the guiding member has a weight 6% upon it. The operation of this device is as follows: Whenever the rod 44 is moved in one direction or the other, the ball will jam between the rod and one of the inclined surfaces of tire member to lock the rod to the guiding member 61 and will thereby resist the movement of the rod 44. As soon, however, as this locking effect takes place, the guiding member 61 will be pushed upward against the weight 64 so that the frictional contact between the ball and its guiding member will be released and the rod will be allowed to slide. The result of this action is that the rod 44 will perform its function of pushing the pendant 40 or the cam 54 in one direction or the other as soon as the door is moved in either direction so that the pro jecting portion of the latch member will be drawn in out of its projecting position as soon as the door is opened slightly and will be returned again to its projecting position when the action of closing the door is commeneed.
I have illustrated more than one form of my invention to show that I do not limit in sell to any speciiic form or construction of the parts.
il'hile I have s iown my invention applied to a sliding door, it is evident that it is applicable to other types of doors, and one skilled in the art ma 7 readily make such mechanical changes would be necessary to adapt it to swinging do or.
hat 1 claim is.-
1. A sliding door, a latch member therefor projecting beyond the edge of said door, and means actuated by the movement of th door for positively moving said latch men"- ber out of its projecting position when the door is opened, and for positively moving said latch member back into its projecting position when the door is closed.
2. fr sliding door, a latch member pivotally and slidably mounted upon the door and projecting beyond the edge thereof, a pendant connected with the latch member, and means actuated by the movement of the door for moving the pendant and thereby l l I l l l l l l causing the pendant to slide the latch member out of its projecting position when the door is opened and to slide the latch member back again when the door is closed.
A sliding door, a frame therefor, a latch member pivotally and slidably mounted upon said door and projecting beyond the edge thereof, a weighted pendant connected with the latch member, and a horizontally disposed rod connected with the pendant and with the door frame and arranged to move the pendant and thereby cause the pendant to slide the latch member out of its projecting position when the door is opened and to slide the latch member back again when the door is closed.
l. A sliding door, a frame therefor, a catch piece mounted upon the frame, a latch member pivotally and slidably mounted upon the door and projecting beyond the edge thereof, a weighted pendant connected with the latch member, a horizontally disposed rod connected with the pendant and with the door frame and arranged to move the pendant and to thereby cause the pendant to slide the latch member out of its projecting position when the door is opened, and means for automatically closing the door, said means being arranged. to actuate the pendant through said horizontally disposed rod to move the pendant and cause the pendant to slide the latch member back into its projecting position by the closure of the door.
5. A sliding door, a latch member pivotally and slidably mounted upon the door and projecting beyond the edge thereof, said latch member being provided with a cam surface, a stationary pin engaging with said cam surface and arranged to guide the latch member into the desired position, a pendant connected with the latch member, and means actuated by the movement of the door for moving the pendant and thereby causing the pendant to slide the latch member out of its projecting position when the door is opened and to slide the latch member back again when the door is closed.
In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.
WILLIAM KEATING.
Witnesses ELLA TUon, ERNEST lV. MAR-SHALL.
US1908446586 1908-04-10 1908-08-03 Door-latch. Expired - Lifetime US920478A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US42621808A US920477A (en) 1908-04-10 1908-04-10 Mechanism for closing sliding doors.
US1908446586 US920478A (en) 1908-04-10 1908-08-03 Door-latch.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1908446586 US920478A (en) 1908-04-10 1908-08-03 Door-latch.

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US920478A true US920478A (en) 1909-05-04

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2551913A (en) * 1948-11-23 1951-05-08 Keyston Bros Retainer latch for pistol holsters
US20060053923A1 (en) * 2002-01-17 2006-03-16 Eyal Artsiely Rotary motion mechanism

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2551913A (en) * 1948-11-23 1951-05-08 Keyston Bros Retainer latch for pistol holsters
US20060053923A1 (en) * 2002-01-17 2006-03-16 Eyal Artsiely Rotary motion mechanism
US7210712B2 (en) * 2002-01-17 2007-05-01 Rav Bariach Security Products Ltd. Rotary motion mechanism

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