US1577073A - Door check and latch mechanism - Google Patents

Description

March 16, 1926. 1,577,073 B.-E. P ERRY DOOR CHECK mi: LATCH MECHANISM Filed Dec. 27, 1924 BENJAMIN]? PERRY A T- RNEy.

1,577,073 eerssr iorrics.

nsn'renzm r. Lenin-tr, or MONTREAL, Queens, CANADA.

Y noon onzec r. sn p LATCH: Mnoimmsm'.

e timation iiled December 27, 1924. Serial No. 758,461. B

To all whom. it may concern) Be it known that I, BENJAMIN F. PERRY, a subject of the King o'l Great Britain, residing at the city of Montreal, in the Province of Quebec, Dominionfolf, Canodmharh invented new and useful Improvements 1n Door Checks and Latch ,Mechenisxm oi which the. followingis e specification. w

This invention relates to door'checks and latch mechanism adapted to co-operate' as hereinafter set forth and to novel i'eatures and improvements to the device covered by United States Patent No. 1,049,529 dated Jenuary 'lth, 1913. j g j v The object of the invention is to provide a door. check oi simple and durable'construction adapted to engage the floor 'automatical'ly in any position of the door, actuated by the latch and operating therewith.

A further object is to provide means to lock and unlock the latch anddoor check. A further object is to provide a. device that is reversible and is applicable to either mortise locks or rim locks in. any position on the door. v V j A further object is to provide means to withhold the door check from operating without efiectin'g the operation of the latch.

Reference ismade to the accompanying drawings in which Fig. 1 is a side elevation of the device partly in section. I n t Fig. 2 is an enlarged vertical "section of it look casing with the special latch mecham Fig. 3 is a. vertical cross section on the line 3-3 of Fig. 2.

1 Fig.4 is a cross section on the line 4-4 of Fig. 2..

Fig. 5 is an enlarged sectional view of the latch mechanism j Fig. 6 is a side view of the night lock 7 mechanism.

Fig. 7 shows the details of the foot piece. Fig, 8 shows the rod adapted to a rim lock.

Fig. 6. shows the latch bolt key release. Fig. 10 is e. pleeview oi the same.

Fig. 11 shows the stop for check rod. Fig. 12 shows a. key for latch bolt release. Referring to the drawings, thcdoor l, is

providedwith a casing '10, of the usual "form, conteinin in its lower part the well known look nice enism 11.

In place of the common form of latch mechanism its centrally operated bolt,

e short'bolt 2,.is employed, narrowed at its inner end 20, in which the vertical bore 21, is adapted to hook on the vertical lug 31', of the latch bar 3.

The projecting end of the bolt 2, is bevelled in theusual way. i

The connection between the bolt 2, and

the latch bar 3, provides a-ready means of reversing the position of the bolt 2, when necessary. 1

The latch bar 3, is provided with a pin 33, at its .other end and a coil spring 32, bearing on the casing wall 102 or a projection therefrom, and surrounding the pin 33, normally presses the bar 3, and bolt 2, to the extended position as shown in Fig. 2.

The latch bar 3, has a rack 34, on its lower edge.

A slot 35, inclined at 45- towards the 7 bolt plate 101, enters the latch bar 3, from above;

The parallel edges of the slot 35, provide guides 350, for a reciprocating block 4, which travels in the slot 35.

The block 4, has a square bore 41, to

receive the pin end 420, of the pin 42.

The latch bar is preferably strengthened by a rib on one side adjacent the rack.

A stop 105, projecting from the wall 103, 35 of the casing 10, prevents the block 4, from leaving the slot 35.

The latch shaft 5, provided with the usual lengthening adjustments and handles, is journalled in M16 casing below the latch bar 3, and is squared to receive the pinion or pawl 6, meshing with the rack 34, of the latch bar 3.

In order to provide a. night lock for the latch the shaft is made in two parts 51 and 52 with rotating connection 50.

The inner part 51, carries the pinion 6, at its end.

ippp 106, projecting from the casing wall A spring 62, normally presses the movable pinion 61, to mesh with the rack 34.

A wedge fork 64, controlled by a. rocking lever 65, and two press- pins 66 and 661 forces the movable pinion 61, away from the main pinion 6, into the stop 106.

The press pins 66 and 661 are operated by the finger in countersunk holes in the lock plate 101.

A spring 107, holds the wedge fork in either position by means of the projections 6 O.

A guide 108, on the wall 103, holds the fork 64, in sliding position.

The rod 7, guided in brackets 70, close to the surface of the door 1, extends towards the floor.

Its upper end is slotted at 71, to receive the flattened end 421, of the pin 42 whereby it is connected with the latch mechanism.

The pin 42, is squared and reciprocates in a slot 14 through the casing wall, the door and the escutcheon.

The sides of the slot in the casing 'wall are preferably thickened to provide a guide way for the pin.

' The lower end of the rod 7, is secured to a foot piece 74, sliding in a guide 7 3. The foot piece 74, may be offset in order to allow clearance from the saddle of the door.

' The foot piece 74, is provided/with a rubber tip 75, preferably of semi-circular cross .Eection and having a flat end bearing on the oor.

When the device is employed with a rim lock the rod 7, is oiiset at 72, as shown in Fig. 8.

11 order to permit the latch to be opened when the night lock is set I provide ashort band of flexible metal 22 secured to the latch bolt 2 at one end, passing through a slot 23 in the casing wall 103 and having a key grip 25 at the other end.

A roller 24 may be provided at theedge of the slot 23.

A key hole 26 and ferrule is provided for the insertion of the key 8'from the outer side of the door.

The key 8 is preferably provided with a hinged cross bar in orderto give a firmer grip. while its point 81 is adapted to catch the key grip.

The ordinary operation of the device is as follows:--The tension of the spring 32, on the latch bar 3, forces it with the latch bolt 2, to the position shown in Fig. 2.

The block 4, sliding in the slot'35, is near its lowestposition when the latch bar is "fully. extended. p The rod 7, is then depressed and the rubbe'r tip 75, of the foot piece 74, is pressing on the floor-,holding the door firmly in any set position.

When the handles are rotated the pinion operates the rack and moves the latch bolt and latch bar backwards against the tension of the spring. 'At the same time the block moves upwardly in the slot and the pin raises the rod and frees the rubber tip from l'hc floor surface. permitting the door to swing freely on its hinges.

The stop 422 may be slid under the pin 42 whcrebylthc rod 7 is prevented from dc scen'di'ng and,the,door check is held out of contact with the floor, while allowing the latch to operate.

By making the slot 35, deeper than is required for the normal floor level the block 4, the pin 42 and the rod 7 can move downwards, and foot piece 74, may be enabled to descend sufhcientlyto reach the floor even when it is sunk to a lower level or is uneven.

The form of the device as above described is suitable for interior doors but when applied to an outside door and it is desirable to lock the latch, the night lock mechanism must be added. With this mechanism the outer handleis locked when the upper press pin is pressed inwards and the latch'bolt can only be withdrawn and released by means of the key.

What I claim is 1. 'In a door check the combination of a latch operating mechanism with means to raise and lower a door check and means to hold the door check out of contact with the floor without affecting the normal latch operation. V

2. In a device of the class described the combination of a casing, a latch mechanism comprising a reversible latch bolt, a latch bar coupled thereto having a toothed rack on its edge, a coil spring, and a handle controlled pinion, with an inclined slot in the latch bar, a blockreciprocating therein, a pin connecting the block with a door check rod, adapted to raise the red when the latch bolt is withdrawn.

3. In a device of the class described the combination of a casing, a latch mechanism comprising a reversible latch bolt, a latch bar coupled thereto having a toothed rack on its edge, a coil spring, and a handle controlled pinion, with an inclined slot in the latch bar, a block reciprocating therein, a pin connecting theblock with a door check rod, adapted to raise the rod when the latch bolt is withdrawn, with means to lock the check in a free position without affecting the normal latch operation.

4. In a device of the class specified the combination of a door check adapted to hold the door in any position having a latch operating mechanism adapted to operate the door check with a latch locking mechanism adapted to lock the latch on one side of the oor.

5. In a device of the class specified the combination of a door check with a latch operating mechanism adapted to operate the door check'and a latch locking mechanism adapted to lockthe latch on one side of the door, comprising a two part shaft, a sliding pinion on one part, a spring, a wedge, a rocking lever and press pins con trolling the locking lever and a toothed stop adapted to mesh with the sliding pinion.

'6. In a device of the class specified the combination of a door check adapted to near/ma operating mechanism ada ted to operate the door check and a latch coking mechanism adapted to lock the latch on one side of the door and means to release the latch from the locked side of the door.

7. In a device of the'class specified the combination of a door check having a latch operating mechanism adapted to operate the door check with a latch locking mechanism adapted to lock the latch on one side of the door and means to release the latch from the locked side of the door comprising a metal tape secured at one end to, the side of the latch bolt, having a key grip at the other end outside a slot in the, casing, and a key to enter the key grip.

8. In a device of'the'class specified the combination of a casing, a latch mechanism comprising a reversible latch bolt, a latch bar with spring compression coupled thereto, a rack on the lower edge of the bar, a handle controlled shaft journalled in the casing carrying a pinion meshing with the,

rack, an inclined slot in the. latch bar a block reciprocating therein, a pin secured to the block extending outwardly through a vertical slot in the casing and door, with a rod slotted to receive the projecting pin, guides to retain he rod parallel to the door, a foot piece reciproca'ing iii a bracket, secured to the lower end of the rod, and a resilient tip o the footp ece.

9. In a device of the class specified the combination of a casing, a latch mechanism cornprising a reversible latch bolt, a latch bar with spring compression coupled thereto, a rack on the lower edge of thevbar, a handle controlled shaft journalled in the casing carrying a pinion meshing with the rack, an

inclined slot in the latch bar a block reciprocating therein, a pin secured to the block extending outwardly through a Vertical slot in the casing and door, with a rod slotted to receive the projecting pin, guides to retain the rod parallel to door, a. foot piece reciprocatin in a bracket, secured to the lower end of t is rod, and a resilient tip to the footp-iece, with means to lower the door check below the normal floor level.

10. In a device of the class specified the combination of a casing, a. latch mechanism comprising a reversible latch bolt, a latch bar with spring compression coupled thereto, a rack on the lower edge oi the bar, a handle controlled shaft journalled in the casing carrying a pinion meshing with the rack, an inclined slot in the latch bar a block reciprocating therein, a pin secured to the block extending outwardly through a vertical slot in the casing and door, guides to retain the rod parallel to door, a foot piece reciprocating in a bracket, secured to the lower end of ,the rod and an offset to footpiece to avoid the saddle of the door.

Montreal, 22nd December, 1924:.

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