US578125A - Cy warman - Google Patents

Description

G. WARMAN. BICYCLE 1.001;.

(No Model.)

jzymfarr Q7 Patented Mar, 2, 1897.

V UNITED J STATES CY NVARMAN, OF WASHINGTON, DISTRICT OF COLUMBIA.

PATENT OF CE.

BICYCLE-LOCK.

SPECIFICATION forming part of Letters Patent N 0. 578,125, dated. March 2, 1897.

Application filed October 27, 1896. Serial No. 610,182. (No model.)

To all whom it may concern.-

Be it known that I, OY WARMAN, a citizen of the United States, residing at Washington,

in the District of Columbia, have invented certain new and useful Improvements in Bicycle-Locks; and I do declare the following to1 be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the ac-. companying drawings, and to the letters of; reference marked thereon, which form a part' of this specification.

This invention relates to certain new and to lock the latter against revolution, requiring no key to lock it, but requiring a key to unlock it, the lock being designed to be permanently affixed to some part of the frame of the bicycle;

The present invention has for its objects,

among others, to provide a simple and cheap yet durable and effective lock of this character, composed of few parts and those readily assembled, compact, and positive in their action and having provision for preventing its being unlocked by the introduction of any instrument other than the proper key. I employ two pawls mounted for opposite move-. ment and a single spring acting upon both of the said pawls, one pawl being designed to hold the locking-arm in one position and the other to move into position to prevent the introduction of any implement to unlock the arm after it has been moved a portion of its distance.

The whole mechanism occupies but little space, and when not in use is not unsightly in its appearance, nor does it add materially to the weight to be carried.

Other objects and advantages of the invention will hereinafter appear, and the novel features thereof will be specifically defined by the appended claims.

of the lock removed, the locking-arm being shown in its normal position by full lines and in its locked position by dotted lines. Fig. 2

cycle being in cross-section and the face-plate is a view of the portion of the frame to which I.

the lock is applied seen at'right angles to Fig. 1. Fig. 3 is an enlarged view of the lock with the face-plate removed and a portion of the locking-arm broken ofl. Fig. 4 is a section on the line 4 4 of Fig. 3, showing also a TI portion of the key. ll

Like letters of reference indicate like parts throughout the several views. 7 1 Referring now to the details of the drawings by letter, Adesignates the lock-case, which is shown in this instance as rectangular in form, open at the lower end, as seen at a, and having upon one side adjacent thereto the opening a for the working ofthe look- This case is designed to be secured '5 shown, and held thereto by a bolt or analogous means 0.

D is a portion of the frame of the bicycle,

E the rim, F the tire, and G one of the spokes, all of well-known construction, and as the present invention does not relate in any way to the bicycle to which the lock itself .is at-'-" tached afurther showing or description thereof is not necessary. H is the locking-arm.v It is mounted for pivotal movement on the stud b, projecting from the case,as shown, and this arm is formed with a notch h, for a purpose which will soon appear. The locking-arm is also provided with a depression I about the stud, as seen in Figs. 1, 3, and 4, to receive the central portion of the key, and from this depression in line with the longitudinal center of the arm is the notch J, which extends through the arm, as seen best in Fig. 4.

K is a pawl or dog pivotally mounted at one end on the pin or stud'L at the lower end of the case, and the freeend of this pawl has a tapered portion 70 at right angles to the length thereof to engage in the notch J of the locking-arm H to hold the same in its locked position, as seen by full lines in Fig. 3.

. M is an oppositely-extending pawl mounted. on the stud or pin m at the upper end of the said notch past the point where this supplemental pawl would act to engage in the same. N is a flat spring arranged within the case at the side thereof, as shown, and its ends act upon the two pawls simultaneously as will be readily understood from Figs. 1 and 3.

P is the face-plate to the lock-case. It is secured in position by screws or other means and is provided with the keyhole Q, which is practically two keyholes disposed at right angles to each other.

R is the key. It is formed with a lug or depending portion 4", which is adapted to enter the notch J in the locking-arm and to engage and move away therefrom the tapered portion of the pawl K when it is desired to unlock the arm. The key is introduced in the horizontal keyhole and cannot be removed until it comes coincident with the vertical keyhole. When the locking-arm is thrown into its locking position, (horizontal,) the notch 7?. thereof is engaged by the lower end of the side wall A of the case, as seen in Fig. 3, to limit the upward movement of the arm and stop the same in position to receive the tape-red portion of the locking-pawl.

Should an attempt be made to pick the lock to unlock the same with anything but the proper key, the tapered portion of the pawl K may be thrown out of its engagement with the notch J of the locking-arm, so that it may be moved slightly on its pivot, but as soon as it reaches the position indicated by dotted lines in Fig. 3 the supplemental pawl M springs into the notch and holds the arm against further movement, and as this is disposed out of the plane of either of the keyholes it is evident that it will hold the arm against any further movement until the said pawl is thrown out of the notch by the introduction of the proper key.

Modifications in detail may be resorted to without departing from the spirit of the invention or sacrificing any of its advantages. I may sometimes employ a spring for holding the arm so that it will not sway back and forth during the movements of the bicycle. In Figs. 1 and 3 I have shown such a spring S extending across an opening 8 in the case and against which the locking-arm will bear in its normal position and thus be held against movement, yet readily turned by hand to bring it to a horizontal position when desired.

WVhat is claimed as new is- V 1. The combination with the case and the pivoted locking-arm, of the oppositely-disposed pivotally-mounted pawls adapted to engage a notch in said arm, as and-for the purpose specified.

2. The combination with the pivoted locking-arm having a notch, of the pivoted pawl having a tapered portion, the independent pawl mounted with its free end in proximity to the said tapered portion, anda spring having its opposite ends acting upon the two pawls, substantially as shown and described.

3. The lock composed of the case open at the bottom and upon one side,the1ocking-arm pivotally mounted within the case and having a notch at its inner end and a notch upon its outer face, the two oppositely-extending independently-pivoted pawls, and the spring arranged within the case with its ends acting one upon each pawl in proximity to the pivot thereof, substantially as and for the purpose specified.

4. The combination with the case havinga face-plate with two keyholes at right angles to each other, and a pivoted locking-arm, of a locking -pawl, a supplemental retainingpawl, and a spring mounted to act simultaneously upon both of said pawls, asshown and described.

In testimony whereof I affix my signature in presence of two witnesses.

CY WARMAN.

WVitnesses:

L. G. HILLS, WM. H. DE LACY.

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