US805362A - Door lock and latch. - Google Patents

Door lock and latch. Download PDF

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Publication number
US805362A
US805362A US1904214809A US805362A US 805362 A US805362 A US 805362A US 1904214809 A US1904214809 A US 1904214809A US 805362 A US805362 A US 805362A
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United States
Prior art keywords
bar
latch
push
bolt
rack
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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
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John Hope Jr
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CHARLES H HOPE
WILLIAM H HOPE
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CHARLES H HOPE
WILLIAM H HOPE
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Priority to US1904214809 priority Critical patent/US805362A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B55/00Locks in which a sliding latch is used also as a locking bolt
    • E05B55/005Cylindrical or tubular locks
    • 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
    • Y10S70/00Locks
    • Y10S70/80Sliding bolt with sliding operating means
    • 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
    • Y10T70/00Locks
    • Y10T70/50Special application
    • Y10T70/5093For closures
    • Y10T70/5155Door
    • Y10T70/5199Swinging door
    • Y10T70/5372Locking latch bolts, biased
    • Y10T70/5385Spring projected
    • Y10T70/5389Manually operable
    • 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
    • Y10T70/00Locks
    • Y10T70/50Special application
    • Y10T70/5093For closures
    • Y10T70/5155Door
    • Y10T70/5199Swinging door
    • Y10T70/5372Locking latch bolts, biased
    • Y10T70/5531Combination and/or key operable
    • 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
    • Y10T70/00Locks
    • Y10T70/70Operating mechanism
    • Y10T70/7441Key
    • Y10T70/7757Push or pull key operation
    • 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
    • Y10T70/00Locks
    • Y10T70/70Operating mechanism
    • Y10T70/7441Key
    • Y10T70/778Operating elements
    • Y10T70/7791Keys
    • Y10T70/7842Single shank or stem
    • Y10T70/7859Flat rigid
    • 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
    • Y10T70/00Locks
    • Y10T70/70Operating mechanism
    • Y10T70/7441Key
    • Y10T70/778Operating elements
    • Y10T70/7791Keys
    • Y10T70/7881Bitting

Definitions

  • WITN ESSES INVENTOR M I M /fi/ab z ATTORNEX No. 805,362. I PATENTED NOV. 21, 1905. J. HOPE, JR. DOOR LOOK AND LATCH.
  • My improvement relates to that class of door locks and latches the plates of which are adapted to clasp both sides and the edge of the stile of the door; and my invention consists in the improved construction and arrangement of the parts of the lock and latch, as hereinafter set forth.
  • Figure 1 represents a view of the outer side of my improved door lock and latch as attached to the stile of a door.
  • Fig. 2 represents a view of the inner side of the same.
  • Fig. 3 represents an enlarged horizontal section taken in the line 3 3 of Fig. 1.
  • Fig. 4 represents the forward end view of the lock and latch as attached to the door.
  • Fig. 5 represents an enlarged horizontal section taken as in Fig. 3, with the latch-bolt drawn back, one of the knobs being broken away.
  • Fig. 6 represents a vertical section taken in line 6 6 of Fig. 3.
  • Fig. 7 represents the side view of the key-receiving case of the outer knob.
  • Fig. 8 represents an edge view of the same.
  • Fig. 1 represents a view of the outer side of my improved door lock and latch as attached to the stile of a door.
  • Fig. 2 represents a view of the inner side of the same.
  • Fig. 3 represents an enlarged horizontal section taken in the line 3
  • FIG. 9 represents a plan view of a thin flat piece for varying the distance between the side plates in order to provide for fitting doors of diflerent thicknesses.
  • Fig. 10 represents an end view of the fluted key.
  • Fig. 11 represents a horizontal section as in Fig. 3, the knobs being broken away.
  • Fig. 12 represents a detail section, taken in the line 12 12 of Fig. 3, showing the lockingcatch in engagement.
  • Fig. 13 represents a detail section showing the locking catch thrown out of engagement.
  • A represents the attaching-plate for the outer side of the door
  • B the attaching-plate for the inner side
  • the outer plate A being provided with the integral front plate O, having at its outer end the inwardly-turned flange a, and also provided with an integral or fixed knob D, the said flange a serving to provide a bearingsupport for the outer end of the outer plate A.
  • the plate O integrally connected with the plate A, is provided with the opening 5, which is adapted to receivethe pivoted latchbolt F, the said latch-bolt being preferably made to turn upon the knife-edge 0, which enters the groove (Z of the latch-bolt.
  • the inner plate B is provided with the fixed knob E and also with the inwardly-extending projection 0, made integral with the plate B and bored out to receive the hollow shank f of the rotary sleeve G, the said sleeve being provided with a flattened head 9, by means of which a movement of rotation may be imparted to the said sleeve.
  • the cross-bar H Upon the inner end of the sleeve G is secured the cross-bar H, which is adapted to hold the latch-bolt in its outward position, as shown in Fig. 11.
  • Within the bore of the rotary sleeve G is placed the sliding push-bar I, provided at its inner end with the hollow head J, within which is placed the actuating-spring it, which serves to carry the push-bar I outward.
  • the hollow head J is provided at its sidewith the projectionawhichengages with the slottedarm 'of the latch-bolt F,the outward pivotal movement of the said latch-bolt being limited by means of the flange 7t.
  • the outer plate A is provided with the outwardly-projecting boss m, bored out to receive the outer push-bar K, the said push-bar being provided with the rack-teeth n, which engage with the teeth of the gear L, which also .engage with the rack-teeth 0 of the rackbar M, the said rack-bar M and push-bar K being actuated by means of the spiral spring N, whereby upon the inward movement of the rack-bar M the push-bar K will be carried outward until the head of the stop-screw p strikes the shoulder q, as shown in Fig. 11.
  • the gear Lturns upon the pin 7", and the rackbar M is provided with the notch s.
  • the hollow head J of the push-bar I is pro vided with the arm t, having at its end the rack a, which is held in the hollow of the outer knob D, the saidrack being adapted for engagement with the gear O, the ends of the shaft 0 of which are held in slots w, made in the opposite sides of the key-receiving case P.
  • the gear 0 is normally held out of en gagement with the teeth of the rack a by means of the spring to, the outward movement of the gear being limited by the ends of the slots w.
  • the catch Q To the side of the arm t is pivoted the catch Q, adapted for engagement with the notch .9 in the rack-bar M, whereby the pushbar K will be locked for movement with the push-barI, and when so locked the inward movement of the push-bar K will cause the backward movement of the latch-bolt to unlock the door; but when the catch Q is disengaged from the notch 51 in the sliding bar M the inward movement of the push-bar K will not affect the latch-bolt.
  • the engagement and disengagement of the catch Q is effected by means of the pinsy y, which project from the side of the cross-bar H and engage with the pin 2, which projects from the side of the catch Q, the pin y engaging with the upper side of the pin .2 to force the catch Q into engagement and the pin serving to engage with the under side of the pin 2 to raise the catch out of engagement, the said catch being then frictionally held in its raised position at the side of the arm t.
  • the outer and inner plates A and B are held together against the sides of the stile of the door by means of the screws R and S. and in fitting doors of varying thicknesses I prefer to employ a packing of thin metal strips T between the inner side of the plate B and the outer. side of the flange a.
  • the key U is corrugated and adapted to fit the corrugated form of the keyhole a, made in the key-receiving case P, and is provided with the rackteeth 6, which engage with the teeth of the gear 0.
  • the beveled forward end of the key U is adapted to force the gear against the action of the spring into engagement with the teeth of the rack u, by means of which the latch-bolt F will be drawn back from the keeper to unlatch the door upon the forward movement of the key in the key-receiving case I
  • the latch-bolt cannot be operated by either the inner or outer push-bar, and when the crossbar H is turned as shown in Fig. 3 and the catch Q, is in engagement with the notch s then the latch-bolt F may be operated by means of either the inner or outer push-bar, and when the catch Q, is thrown out of engagement with the notch s, as shown in Fig. 13, the latch-bolt can be operated only by the inner push-bar 1.
  • I In order to indicate the proper restingpoint for the turned sleeve G, I employ a spring-actuated pin 0, the beveled outer end of which engages with the notch CZ in the head of the sleeve.
  • a door lock or latch the combination of the inner plate provided with a fixed knob, and the outer plate provided with a fixed knob, and with a front plate extending over the edge of the door, the pivoted latch-bolt held in the opening in the front plate, the push-bar cartively connected with the latch-bolt, and the spring arranged between the outer plate and the push-bar to cause the outward movement of the push-bar and latch-bolt.
  • the combination of the inner plate, and the outer plate each provided with a fixed knob, and with the front plate extending over the edge of the door, the pivoted latch-bolt held in the opening in the front plate, the push-bar carried by the inner plate and operatively connected with the latchbolt, the spring for actuating the push-bar and the latch-bolt in the outward direction, the rack-arm projecting from the push-bar into the cavity of the knob of the outer plate, and the rack-actuating gear, adapted to cause the withdrawal of the latch-bolt, upon the proper engagement of the key with the teeth of the gear.
  • the combination of the inner plate, and the outer plate each provided with a fixed knob, and with the front plate extending over the edge of the door, the pivoted latch-bolt held in the opening in the front plate, the push-bar carried by the inner plate and operatively connected with the latchbolt, the spring for actuating the push-bar, and the latch-bolt in the outward direction, the rack-arm projecting from the push-bar into the cavity of the knob of the outer plate, the key-receiving case held in the knob, the key-actuated gear adapted for engagement with the rack-arm and the spring for causing the disengagement of the gear from the rack upon the withdrawal of the key.

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Description

No. 805,362. PATENTED NOV. 21, 1905. J. HOPE, JR. DOOR LOCK AND LATCH.
APPLICATION FILED JUNE 30,1904.
3 SHBETSSHEET 1.
WlTN ass 56 ZWJGTQM Y yak 7G 4. ,4, K/bfLJ ATTORNEY No. 805,362. 'PATBNTED NOV. 21, 1905. J. HOPE, JR.
DOOPu LOOK AND LATCH.
APPLICATION rum) JUNE 30,1904,
3 SHEETS-SHEET 2.
WITN ESSES INVENTOR M I M /fi/ab z ATTORNEX No. 805,362. I PATENTED NOV. 21, 1905. J. HOPE, JR. DOOR LOOK AND LATCH.
APPLICATION FILED JUNE 30,1904.,
3 SHEETS-SHEET 3.
F'IGJZ.
fi i dz Q 'WITNESSES. 1 J lNvENToR MdQ'WW Wwfi UNITED STATES PATENT ornion.
JOHN HOPE, JR, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR OF ONE- HALF TO OHARLES H. HOPE AND WILLIAM H. HOPE, OF PROVIDENCE,
RHODE ISLAND.
DOOR LOCK AND LATCH.
Specification of Letters Patent.
Patented Nov. 21, 1905.
. of the United States, residing at Providence,
in the State of Rhode Island, have invented a new and useful Improvement in Door Locks. and Latches, of which the following is'aspecification.
My improvement relates to that class of door locks and latches the plates of which are adapted to clasp both sides and the edge of the stile of the door; and my invention consists in the improved construction and arrangement of the parts of the lock and latch, as hereinafter set forth.
In the accompanying drawings, Figure 1 represents a view of the outer side of my improved door lock and latch as attached to the stile of a door. Fig. 2 represents a view of the inner side of the same. Fig. 3 represents an enlarged horizontal section taken in the line 3 3 of Fig. 1. Fig. 4 represents the forward end view of the lock and latch as attached to the door. Fig. 5 represents an enlarged horizontal section taken as in Fig. 3, with the latch-bolt drawn back, one of the knobs being broken away. Fig. 6 represents a vertical section taken in line 6 6 of Fig. 3. Fig. 7 represents the side view of the key-receiving case of the outer knob. Fig. 8 represents an edge view of the same. Fig. 9 represents a plan view of a thin flat piece for varying the distance between the side plates in order to provide for fitting doors of diflerent thicknesses. Fig. 10 represents an end view of the fluted key. Fig. 11 represents a horizontal section as in Fig. 3, the knobs being broken away. Fig. 12 represents a detail section, taken in the line 12 12 of Fig. 3, showing the lockingcatch in engagement. Fig. 13 represents a detail section showing the locking catch thrown out of engagement.
In the drawings, A represents the attaching-plate for the outer side of the door, and B the attaching-plate for the inner side, the outer plate A being provided with the integral front plate O, having at its outer end the inwardly-turned flange a, and also provided with an integral or fixed knob D, the said flange a serving to provide a bearingsupport for the outer end of the outer plate A. The plate O, integrally connected with the plate A, is provided with the opening 5, which is adapted to receivethe pivoted latchbolt F, the said latch-bolt being preferably made to turn upon the knife-edge 0, which enters the groove (Z of the latch-bolt. The inner plate B is provided with the fixed knob E and also with the inwardly-extending projection 0, made integral with the plate B and bored out to receive the hollow shank f of the rotary sleeve G, the said sleeve being provided with a flattened head 9, by means of which a movement of rotation may be imparted to the said sleeve. Upon the inner end of the sleeve G is secured the cross-bar H, which is adapted to hold the latch-bolt in its outward position, as shown in Fig. 11. Within the bore of the rotary sleeve G is placed the sliding push-bar I, provided at its inner end with the hollow head J, within which is placed the actuating-spring it, which serves to carry the push-bar I outward. The hollow head J is provided at its sidewith the projectionawhichengages with the slottedarm 'of the latch-bolt F,the outward pivotal movement of the said latch-bolt being limited by means of the flange 7t. When the head Z of the push-bar I is pressed inward against the action of the spring h, the latch-bolt will be withdrawn from the keeper to the position shown in Fig. 5, and upon the release of the push-bar from pressure the latch-bolt will be carried outward by the action of the spring /b to the position shown in Fig. 3 to latch the door.
The outer plate A is provided with the outwardly-projecting boss m, bored out to receive the outer push-bar K, the said push-bar being provided with the rack-teeth n, which engage with the teeth of the gear L, which also .engage with the rack-teeth 0 of the rackbar M, the said rack-bar M and push-bar K being actuated by means of the spiral spring N, whereby upon the inward movement of the rack-bar M the push-bar K will be carried outward until the head of the stop-screw p strikes the shoulder q, as shown in Fig. 11. The gear Lturns upon the pin 7", and the rackbar M is provided with the notch s.
The hollow head J of the push-bar I is pro vided with the arm t, having at its end the rack a, which is held in the hollow of the outer knob D, the saidrack being adapted for engagement with the gear O, the ends of the shaft 0 of which are held in slots w, made in the opposite sides of the key-receiving case P. The gear 0 is normally held out of en gagement with the teeth of the rack a by means of the spring to, the outward movement of the gear being limited by the ends of the slots w. To the side of the arm t is pivoted the catch Q, adapted for engagement with the notch .9 in the rack-bar M, whereby the pushbar K will be locked for movement with the push-barI, and when so locked the inward movement of the push-bar K will cause the backward movement of the latch-bolt to unlock the door; but when the catch Q is disengaged from the notch 51 in the sliding bar M the inward movement of the push-bar K will not affect the latch-bolt. The engagement and disengagement of the catch Q is effected by means of the pinsy y, which project from the side of the cross-bar H and engage with the pin 2, which projects from the side of the catch Q, the pin y engaging with the upper side of the pin .2 to force the catch Q into engagement and the pin serving to engage with the under side of the pin 2 to raise the catch out of engagement, the said catch being then frictionally held in its raised position at the side of the arm t.
The outer and inner plates A and B are held together against the sides of the stile of the door by means of the screws R and S. and in fitting doors of varying thicknesses I prefer to employ a packing of thin metal strips T between the inner side of the plate B and the outer. side of the flange a. The key U is corrugated and adapted to fit the corrugated form of the keyhole a, made in the key-receiving case P, and is provided with the rackteeth 6, which engage with the teeth of the gear 0. The beveled forward end of the key U is adapted to force the gear against the action of the spring into engagement with the teeth of the rack u, by means of which the latch-bolt F will be drawn back from the keeper to unlatch the door upon the forward movement of the key in the key-receiving case I When the cross-bar H is turned as shown in Figs. 6 and 11, the latch-bolt cannot be operated by either the inner or outer push-bar, and when the crossbar H is turned as shown in Fig. 3 and the catch Q, is in engagement with the notch s then the latch-bolt F may be operated by means of either the inner or outer push-bar, and when the catch Q, is thrown out of engagement with the notch s, as shown in Fig. 13, the latch-bolt can be operated only by the inner push-bar 1.
In order to indicate the proper restingpoint for the turned sleeve G, I employ a spring-actuated pin 0, the beveled outer end of which engages with the notch CZ in the head of the sleeve.
In my improved lock and latch reciprocating devices are employed for imparting the initial movement for withdrawing the latchbolt, as the push-bars and the puslrkey, instead of employing a rotary knob to effect the primary movement, as in ordinary locks.
I claim as my invention 1. In a door lock or latch, the combination of the inner plate provided with a fixed knob, and the outer plate provided with a fixed knob, and with a front plate extending over the edge of the door, the pivoted latch-bolt held in the opening in the front plate, the push-bar cartively connected with the latch-bolt, and the spring arranged between the outer plate and the push-bar to cause the outward movement of the push-bar and latch-bolt.
3. In a door lock or latch, the combination of the inner plate, and the outer plate provided with the front plate extending across the edge of the door, the pivoted latch-bolt held in the opening in the front plate, the rotary stop for locking the latch-bolt against inward movement, and the push-bar passing through the axis of the rotary stop and op eratively connected with the latch-bolt.
4. In a door lock or latch, the combination of the inner plate, and the outer plate each provided with a fixed knob, and with the front plate extending over the edge of the door, the pivoted latch-bolt held in the opening in the front plate, the push-bar carried by the inner plate and operatively connected with the latchbolt, the spring for actuating the push-bar and the latch-bolt in the outward direction, the rack-arm projecting from the push-bar into the cavity of the knob of the outer plate, and the rack-actuating gear, adapted to cause the withdrawal of the latch-bolt, upon the proper engagement of the key with the teeth of the gear.
5. In a door lock or latch, the combination of the inner plate, and the outer plate each provided with a fixed knob, and with the front plate extending over the edge of the door, the pivoted latch-bolt held in the opening in the front plate, the push-bar carried by the inner plate and operatively connected with the latchbolt, the spring for actuating the push-bar, and the latch-bolt in the outward direction, the rack-arm projecting from the push-bar into the cavity of the knob of the outer plate, the key-receiving case held in the knob, the key-actuated gear adapted for engagement with the rack-arm and the spring for causing the disengagement of the gear from the rack upon the withdrawal of the key.
6. In a door lock or latch, the combination of the outer plate provided with a fixed knob, the corrugated key provided at its edge with the rack-teeth, the key-receiving case held in the knob and provided with the corrugated opening for the reception of the key, the gear held in the enlarged chamber of the keyreceiving case, and adapted for engagement with the rack of the key.
7 In a door lock or latch, the combination of the outer plate provided with the fixed knob, the outer-plate push-bar provided with the rack-teeth, a stop for limiting the outward movement of the outer-plate push-bar, the gear pivoted within a recess of the outer plate and engaging with the rack-teeth of the push-bar, the rack-bar in mesh with the opposite side of the gear, and the spring for causing the outward movement of the outer-plate push-bar, and the corresponding inward movement of the rack-bar.
8. In a door lock or latch, the combination of the inner plate, provided with the fixed knob, and the outer plate provided with the fixed knob, and with the front plate extending over the edge of the door, the pivoted latchbolt held in the openingin the front plate, the push-bar carried by the inner plate and operatively connected with the latch-bolt, the spring for causing the outward movement of the inner push-bar and latch-bolt, the outer pushbar carried by the outer plate, and provided with the rack-teeth, a stop for limiting the outward movement of the outer push-bar, the gear held within a recess of the outer plate and engaging with the rack-teeth of the outer push-bar, the rack-bar in mesh with the opposite side of the gear and provided with the engaging notch, the spring for causing the outward movement of the outer push-bar and rack-bar, the engaging catch connected with the inner push-bar, and means for causing the engagement of the catch with the notch of the rack-bar, whereby upon such engagement, the push-bars carried by the outer and inner plates will be caused to move simultaneously in opposite directions, and the outer push-bar may be employed to cause the withdrawal of the latch-bolt.
9. In a door lock or latch, the combination of the inner plate provided with the fixed knob, and the outer plate provided with the fixed knob, and with the front plate extending over the edge of the door, the pivoted latchbolt held in the opening of the front plate, the rotary stop provided with the engaging pins, the inner push-bar passing through the axis of the rotary stop and operatively connected with the latch-bolt, the spring for causing the outward movement of the inner push-bar and latch-bolt, the outer push-bar provided with the rack-teeth, a stop for limiting the outward movement of the outer push-bar, the gear held within a recess of the outer plate and engaging with the rack-teeth of the outer push-bar, the rack-bar in mesh with the opposite side of the gear and provided with the engaging notch, the spring for causing the outward movement of the outer push-bar,and corresponding inward movement of the rack-bar, the engaging catch connected with the inner push-bar and provided with a projecting pin adapted for engagement with the engaging pins of the rotary stop, whereby upon the movement of the rotary stop in one direction, the catch will be caused to engage with the notch of the rack-bar, and in the opposite direction will be disengaged therefrom, so that by the movement of the rotary stop the outer push-bar may be either placed in engagement or disengagement with the latch-bolt.
JOHN HOPE, JR.
Witnesses:
SocRArEs SCHOLFIELD, ANDREW J. PITOHER.
US1904214809 1904-06-30 1904-06-30 Door lock and latch. Expired - Lifetime US805362A (en)

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US1904214809 US805362A (en) 1904-06-30 1904-06-30 Door lock and latch.

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