US2072317A

US2072317A - Coach lock and handle

Info

Publication number: US2072317A
Application number: US8812A
Authority: US
Inventors: Simpson Emory Glenn
Original assignee: Ternstedt Manufacturing Co
Current assignee: Ternstedt Manufacturing Co
Priority date: 1935-03-01
Filing date: 1935-03-01
Publication date: 1937-03-02
Anticipated expiration: 1954-03-02

Description

March 2, 1937. E. G. SIMPSON COACH LOCK AND HANDLE Filed March 1, 1935 4 Sheets-Sheet l /4 Q as @D INVENE-I'OR Mae) czfiv/v JT/MPJ /V 16W, k TTORNEYS March 2, 1937. s s 2,072,317

COACH LOCK AND HANDLE Filed March 1, 1935 4 Sheets-Sheet 2 Moe) G2 E/WVJ/MPSO/V 7 g 5 /fW, M a; K

ATT NEYS March 2, 1937.

E. G. SIMPSON 2,072,317

COACH LOCK AND HANDLE 4 Sheets-Sheet 4 Filed March 1, 1935 INVENTOR [Mair g1. z/vn/ J/MPJO/V M M, f 1 WM TORNEYS Patented Mar. 2, 1937 v PATENT @FMCE COACH LOCK AND HANDLE Emory Glenn Simpson, Detroit, Mich, assigncr to Ternstcdt Manufacturing Company, Detroit, Mich, a corporation of Michigan Application March 1, 1935, Serial No. 8,312

c Claims. (oi. ill-M9) This invention relates to improved coach lock and handle particularly adapted for automobile bodies. It is the object of the invention to afiord a lock or a latch which may be set so as to prevent operation from either the outside or insideto prevent unauthorized entry from the outside, and to prevent unintended or undesired operation from the inside as by a child at play. There have been a good many children hurt or killed by playfully operating the inside handle before their attendants could stop them. There have also been a number of injuries to adults, carelessly and accidentally operating the door opening handle. The dangers of this have been particularly l5 emphasized in the last year or two when such a large number of doors open at the front. If the door is open even a crack when going at high speed, the door will be either jerked out of the hand or pull the occupant ofi the seat. Either may break the door check and hinges and often wreck the door and the side of the car. This is due to the tremendous air resistance the door encounters when opened at high speed with the door facing forwardly.

It is the object of the present invention to provide an arrangement whereby the inside control which may be of the snap-over type, will not only render operation of the handle on the inside impossible, but will disconnect the outside handle from the bolt. This will not only block the op eration of the outside handle in the ordinary way, but will make this fool-proof against iorcing by slipping a length of pipe over the lever handle to force the handle, as has been often done by sneak thieves.

This arrangement not only simultaneously renders both the outside and inside handle foolproof, but .it enables a fool-proof lock to be locked from the outside without a key by simply snapping over the inside control while the door is open and closing the door with the outside handle turned to the limit of its throw. This fool-proof i look may or may not be used in connection with a remote control handle.

In the drawings:

Fig. l is an elevation of the lock (remote control inside handle) Fig. 2 shows the same look with the outside retractor turned to withdraw the bolt.

Fig. 3 shows the inside snap-over operated to disconnect both the outside and inside handles from the bolt.

Fig. 4 is a section on the line d- -d of Fig. 1 but showing an inside handle, which is not a 55 remote control.

Fig. 5 is a section on the line 5-5 of Fig. i.

Fig. 6 is an elevation of the same look with some of the parts removed to show the detail of the parts behind. V

Fig. '7 is a detail of the snap-over control taken on the line 7- of Fig. 3.

i Fig. 8 is a section on the line d---@ of Fig. 2-3.

Fig. 9 is an elevation of an automobile door equipped with the improved lock.

Fig. 10 is a longitudinal section through the handle spindle showing the spindle lock.

Figs. 11 and 12 are sections on the lines li it and l2-l2 of Fig. 10.

Referring to Fig. 1, l designates the lock cas= ing, 2 the latch bolt carrying a spiral spring 3, with one end bearing against the lever d, which fulcrums at 5. The other end of the lever designated "5 bears against the roll-back i. This is the regular construction in a 'l'ernstedt loch and has already been described and claimed in the Flynn patent #1,857,684=. This arrangement has the advantage that the single lock spring not only projects the bolt outwardly, but serves also to keep the parts, especially the roll-hack, firmly up against the selvage plate 3 so as to prevent rattling. This is done without the use of an additional spring to bear against the roll-back, which additional spring would interpose considerable more resistance to turning effort to open the door from the outside.

The lever t carries a clutch 9 which is shown in engaged position in Fig. 1 and disengaged position in Fig. 3. This clutch is thrown in or out from the inside by the snap-over lever l which connects by a link it with the clutch control lever 52, which pivots on the rivet it. A spring of the safety pin variety it, has one end secured to this clutch control lever and the other end to the lock casing i, (see Fig. 8). The link i has a riveted ear l5 that enters an. opening in the clutch control lever l2. This ear projects through the slot 96 in the casing (check Fig. 6). It will be seen that the end ll of the spring travels from the position shown in Fig. 1 to the position shown in Fig. 3 while the end l8 remains fixed-4n other words, this is a snap-over center spring, the end ll travelling from. the position above a straight line through it-dd (Fig. 1) to a position below this line (Fig. 3). This gives the familiar action of a snap-over switch and we call this a Snap- Tite lock. Both the clutch control lever and the snap-over inside control will be held to the extreme of one or the other of their movements by reason of this snap-over center spring.

Connected with this clutch control lever is an.

hit

arm I! on the clutch 9. The finger on this arm rides in the slot of the clutch control lever, hence when the snap-over II), (for detail see Fig. 7) is snapped over center, the clutch control arm passes from the position shown in Figs. 1 and 2, to the position shown in Fig. 3. It thereby pulls the clutch 9 out of the range of the shoulder II on the latch bolt, hence when the outside retractor is operated as shown in the dotted lines of Fig. 3, the clutch 9 will operate without picking up the latch bolt. The roll-back will turn through part of a turn as shown in Fig. 2 and as shown in dotted lines in Fig. 3, but will not turn any further. However, with the parts as shown in Fig. 3, the clutch is ineffective to pick up the latch bolt, hence we designate this handle as a Semi-Free Wheeling Handle. When a thief takeshold of the handle, he finds that it will turn without operating the latch bolt through almost 90. The spring 22 will return the handle to its normal horizontal position when the handle is released. The semi-free wheeling is, therefore, more desirable than full free wheeling as it allows the handle to turn through its operative range and then be returned by the spring.

By reason of the yoke-like end 23 of the clutch control lever l2, this lever may be manipulated from the outside of the door by the key 24, (Fig. 10) which operates the usual cylinder lock 25. This lock is fastened to the crank spindle 26 which has an eccentric pin 21, (Fig. 12) which engages in the recess 28 in the sliding pawl 29. This pawl can be projected by the key to engage either one or the other of the arms of the yoke 23 to either lock the door or release the door by throwing the clutch control lever I 2 past center. After the lever has been thrown past the center line l8-- l3, the spring I4 completes the movement so that all the pawl has to do is to initiate the movement. After the grip on the key is released, the

coil spring 30, (Fig. 11) abutting against the shoulder 3| or 3|a and for the time being turned out of registry with the end 32 or 32a of the fixed sleeve 32b, will automatically return the lock cylinder and the pawl to their neutral position.

However, thekey does not have to be used to lock the door. It can be locked when the door is open by first snapping the inside control lever ill to the locked position as the connected parts are shown in the full lines of Fig. 3. This will take the cam contactor 34 on the end of the clutch out of the range of the cam 35 on the depending arm of the sliding latch bolt. Ordinarily, when the inside control is in the "on position, a retraction of the bolt by opening the door from the inside or by slamming the door shut will release the inside control and prevent one from getting locked out when he has left the keys inside. However, by this clutch arrangement and by turning the handle down (the usual way to withdraw the latch bolt), but with the clutchdisengagedit carries the cam contactor34- out of the range of the cam 35 which ordinarily throws the clutch back into engagement every time the latch bolt is operated. This is a valuable feature as it permits one to lock the door from the outside without the key but only after he has made twamovements which challenges his attention to what he is doing so that he may assure himself that he has the key.

Disconnecting the clutch from operative relation with the bolt not only disconnects the outside handle but the inside handle 36, (Fig. 4). The inside handle 36 is fastened to the end of the same spindle 31, which in turn is fastened to the roll-back 1. Hence, the inside handle is rendered ineffective at the same time that the outside handle is rendered ineffective. This makes it impossible, when the inside control is set, for a child to turn the inside door handle to retract the bolt. It also makes it impossible for an absent-minded person to turn the handle, which occurs at times when his mind is on some other subject.

This arrangement affords what we call a completely fool-proof lock,-fool-proof on the inside because it is inoperative by children or thoughtless persons, and fool-proof on the outside, because not only the operation of the outside handle by the hand to retract the latch bolt is prevented, but it is not possible to release the latch bolt by forcing the outside door handle.

The remote control handle 55 such as shown in Figs. 1 and 3 can be connected up to operate the bolt through the clutch 9 by using a depending arm 38 fastened to the roll-back l by the rivet 56 (Fig. 5). This arm 38 is connected by a link 39 with a crank 40 on remote control handle 55. When the inside handle is to be located at substantially the point where the outside handle is located, the spindle that connects with the outside roll-back is extended through to the inside of the door as shown in Figs. 4 and 9 and the handle 36 secured directly to this common spindle.

What I claim is:

1. A door lock for vehicles having in combination a casing, a spring propelled latch bolt slid able therein, a spindle journalled in said casing, means for transmitting and converting the turning movement of the spindle into a reciprocating movement of the latch bolt, said means including a clutch by which the spindle may be connected to or disconnected from the latch bolt, an outside semi-freewheeling handle arranged to move through only part of a turn and in the form of a lever arranged to normally occupy a predetermined position with respect to the door, an inside handle of the semi-freewheeling type arranged to move through only part of a turn, said handle being of the lever type and arranged to normally occupy a predetermined position, both of said lever handles being secured to turn the said spindle, an inside control for connecting or disconnecting the clutch between the spindle and the latch bolt, an outside control for so connecting or disconnecting said clutch, and a spring acting on said spindle for returning the handles to their predetermined positions after the same have been released.

2. A door lock for moving vehicles having in combination a casing, a spring propelled latch bolt slidable therein, a spindle journalled in said casing, means for transmitting and converting the turning movement of the spindle into a reciprocating movement of the latch bolt, said means including a clutch by which the spindle may be connected to 'or disconnected from the latch bolt, an outside semi-freewheeling handle arranged to move through-only part of a turn and'in the form of a lever arranged to normally occupy a predetermined position with respect to the door, an inside handle of the semi-freeand a spring acting on said spindle for returning the handles to their predetermined positions after the same have been released.

3. A door lock for moving vehicles having in combination a casing, a spring propelled latch bolt slidable therein, a spindle journalled in said casing, means for transmitting and converting the turning movement of the spindle into a reciprocating movement of the latch bolt, said means including a clutch by which the spindle may be connected .to or disconnected from the latch bolt, an outside semi-freewheeling handle arranged to move through only part of a turn and in the form of a lever arranged to normally occupy a predetermined position with respect to the door, an inside remote control handle of the semi-freewheel type arranged to move through only part of a turn, said handle being of the lever type and arranged to normally occupy a predetermined position, both of said lever handles being secured to turn the said spindle, an inside control for connecting or disconnecting the clutch between the spindle and the latch bolt, and a spring acting on said spindle for returning the handles to their predetermined positions after the same have been released.

4. A door lock for moving vehicles having in combination a casing, a spring propelled latch bolt slidable therein, a spindle journalled in said casing, means for transmitting and converting the turning movement of the spindle into a reciprocating movement 01' the latch bolt, said means including a clutch by which the spindle may be connected to or disconnected from the latch bolt, an outside semi-freewheeling handle arranged to move through only part of a turn and in the form of a lever arranged to normally occupy a predetermined position with respect to the door, an inside handle of the semi-freewheeling type arranged to move through only part of a turn, said handle being of the lever type and arranged to normally occupy a predetermined position, both of said lever handles being secured to turn the said spindle, an inside control for connecting or disconnecting the clutch between the spindle and the latch bolt, and a spring acting on said spindle for returning the handles to their predetermined positions after the same have been released, the closing of the door if the clutch is disconnected serving to automatically return the clutch to a position for connecting the spindle to the reciprocating latch bolt.

EMORY GLENN SIMPSON.