US9767A - Opebating and locking knob-bolts - Google Patents

Description

UNITED STATES PATENT OFFIQF.

OLIVER ELLSVVORTH, OF HARTFORD, CONNECTICUT.

OPERATING AND LOCKING KNOB-BOLTS.

Specification of Letters Patent No. 9,767, dated June 7, 1853.

To al whom @'25 may concern Be it known that I, OLIVER ELLswoRTH, of Hartford, in the county of Hartford and State of Connecticut, have made a new and useful Improvement in the Mode of Fastening and Unfastening Doors by a Door Lock, Latch, or Bolt; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, in which- Figure 21 represents the fastener, lock or latch as it appears within a mort-isc in a door, the same being an edge view. Fig. 19 represents a perspective View ofthe saine, exhibiting the inside knob and ring. Fig. 27 represents a perspective view of the same, exhibiting the outside knob and key hole.

My mode of constructing the lock, is as follows: I take what is now commonly known as the mortise latch (shown in Fig. 18) the parts of which being composed of a bolt, (Fig. 23), a spiral spring (Fig. 25), a shoe (Figs. 25 and 26) attached to the end of said bolt, a tumbler which plays upon the arms of said shoe (shown in Fig. 29 at letters A, B, and B, O), all of which are contained in a. suitable case (shown in Fig. 31). To the tumbler of said latch I attach a pin (Fig. 31 at letter E) so that one end of said pin being fastened to the tumbler (Fig. 30 letter P) the opposite end of said pin will point toward and bear upon the bolt (Fig. 31 letter E) so as to prevent the bolt being pushed back into the case of the latch by any instrument from the outside, working upon the end of said bolt. Said pin or preventer is so arranged as to be turned away from the end of said bolt by means of the turning of the tumbler, thereby allowing the bolt to be brought within the case of the lock as shown in Fig. 36.

The hole through my tumbler is made round (see Fig. 28) for the purpose of ad mitting a round spindle (Fig. 22). On either side of the case of said latch or lock I cause a cavity to be made having oblique sides (Figs. 18, 22 and 35). Said cavity is formed around any part of the lock case, through which said spindle passes, and said cavity is so constructed as to admit a pin called rod pin (Fig. 35) hereinafter described. I now take a hollow spindle, one end of said spindle being closed by a mail key or stopper (Fig. 3, letters F F) :through said stopper a pin passes called thumb pin or disconnecter (Fig. 4 letter D). Said thumb pin possesses a head upon each end, the one head being confined within the hollow spindle, while the opposite end of the pin projects outside of the knob hereinafter described. A slit is now made in the hollow spindle, commencing at the opposite end from that containing the mail key 7 or stopper and tumbler-pin or disconnector which slit terminates at a point on the spondle sutiicient toadmit and allow the rod working backward and forward as hereinafter described. I now attach to a tube, a knob; (Fig. 10). Said knob tube possesses teeth on the opposite end of the tube from that containing the knob, and this tube I attach to the spindle (Fig. 11) but not in such manner that said knob and tube may not be turned around upon the spindle while said knob and tube cannot be withdrawn -from the spindle. This knob attached to said spindle as aforesaid I shall call the outside knob (Fig. 21).

At a required point on the spindle I place a screw, the head of which serves to turn the tumbler (Fig. 21 letter B) when the spindle is turned, while the inside point of the screw (which comes through the spindle) serves to hold the main spring (Fig. 8 letter E) which is attached to the rod. I now place the rod (Fig. 11 letter C C) within the spindle, allowing the shank of the rod to point toward the open end of said spindle (Fig. 11). Around said shank I place a spiral spring (Figs. 11 and 12). If now the spindle be placed within the lock and the inside knob screwed on to the spindle at the opposite end and the thumb pin or disconnecor already referred to be pushed in from the outside knob (Fig. 21) said thumb pin coming in contact with the end of the rod forces the rod toward the inside knob carrying the pin, (attached to the rod and known as rod pin) -out of the teeth of the outside kno-b tube and into the cavity or oblique sides contained in the side of the lock case (Fig. 35). The latch has now become a lock to any person on the outside, as the outside knob will turn around upon the spindle without turning said spindle. The

only way of opening the lock from the outside when thus disconnected is by the introduction of a key into the outside knob (Fig. 13) which key fits over the thumb pin and onto the end of the spindle. If the spindle be turned, t-he tumbler will now be turned, by means of the pin or screw attached to the spindle called tumbler pin; which pin fits into a slit made for that purpose in the tumbler (Fig. 33 letter R).

The turning of the spindle either with a key from the outside or by means of turning the knob from the inside has the same effect. In the one case the lock is opened by means of the tumbler pin as aforesaid, while in the other case the pin of the rod (called rod pin) having been lodged in the cavity of the lock (possessing oblique sides) is now broughtagainst these oblique sides and at once forced out of the cavity and into the opening between the teeth in the out-side knob tube (Fig. 22). The spiral spring already placed around the shank of my rod assists to keep said rod pin between the openings of the teeth (Fig. 2l) -by one end of said spiral spring pressing against the inside knob (Fig. 12) or being confined Within the hollow spindle so that the opposite end of the spring (Fig. 14) will always pass against the rod. The inside knob having been provided with a hole passing through its center (Fig. 12, 19 and 21) I now attach to the end of my rod possessing the shank an extender (Fig. 14: letter K) which consists of a tube screw cut on the outside, which end being screwed to the shank of the rod the opposite end projects outside of the inside knob, thus permitting the spindle to be accommodated to any required thickness of a door (Fig. 21). This extender serves only two purposes: 1st, by it the outside knob is disconnected by the withdrawal of the extender to a required point when on the inside of a door-thus drawing out the rod pin from the teeth; 2nd, the rod is lengthened or shortened as required to fit a door by screwing up or unscrewing the extender to or from the shank of the rod.

It would then appear my improvementcan be converted into a lock or latch at pleasure, either from the outside or inside of a door. 1st, said improvement can be converted into a lock from the outside by simply pushing in the thumb pin or disconnecting pin; 2nd, a key introduced into the outside knob converts the lock into a latch; 3d, it can be converted into a lock from the inside by the simple drawing out of the extender; 4th, it can be converted into a latch by turning the inside knob, thus affording a safety for the use of'rail road cars and othersl hitherto unknown.

I claim therefore as my invention and improvement 1. The preventer E attached to the tumbler of the lock for the purpose of preventing the bolt being forced inward by means of any instrument from without.

2. I claim in combination with the pin and spring the oblique sides or angles cavity or opening made in the sides of the case of the lock shown in Figs. 22, 34 and 35 for purposes already set forth, z'. e., for the purpose of converting my lock or restoring the connection between the outer knob spindle lock into a latch by means of the rod pin coming in contact with the oblique sides when the inside knobV is turned, thereby turning the spindle and causing the rod pin to be moved out by reason of the friction of said rod pin upon the sides of said cavity, as herein set forth.

3. I claim the introduction of a key through a door knob for the purpose of turning the spindle of the lock thereby causing a lock to be converted into a latch (from the outside) as described in this specification.

4. I claim the thumb pin or disconnecting pin which pin passes through the outside knob and into the spindle, thereby forming a connection wit-h the rod for the purpose of converting a latch into a lock at pleasure from the outside of a door, as herein set forth.

The value of my improvement consists chiefly in making said lock and latch a more simple, economical, convenient and secure lock and latch than those now used.

OLIVER ELLSVVORTH.

Witnesses:

WM. YV. ELLSWORTH, ELIZABETH ELLSWORTH.

Images