US2059450A

US2059450A - Piston bugle

Info

Publication number: US2059450A
Application number: US17228A
Authority: US
Inventors: Wilbur M Frank
Original assignee: WILLIAM FRANK Co
Current assignee: WILLIAM FRANK Co
Priority date: 1935-04-19
Filing date: 1935-04-19
Publication date: 1936-11-03
Anticipated expiration: 1953-11-03

Description

Nov. 3, 1936. w, M FRANK 2,059,450

PI STON BUGLE FiIed April 19, 1935 Patented Nov. 3, 1936 PATENT OFFICE PISTON BUGLE Wilbur M. Frank, Chicago, Ill., assignor to William Frank Company, Chicago, Ill., a corporation of Illinois Application April 19,

7 Claims.

The invention relates to piston bugles and more specially to an improved arrangement for locking the pistons of such bugles in definite position to prevent manipulation thereof when desired, which is of simple construction and highly efiicient in use.

Another object of the invention is the provision of a, locking arrangement of the character indicated, so constructed and arranged as to prevent manipulation thereof during contests.

Other objects will appear hereinafter.

The invention consists in the combinations and arrangements of parts hereinafter described and claimed.

The invention will be best understood by reference to the accompanying drawing forming part of this specification and in which:

Fig. 1 is a side view of a piston bugle equipped with a locking arrangement embodying the invention;

Fig. 2, an enlarged partial similar view showing the locking arrangement on a larger scale.

Fig. 3, a side view of the locking arrangement detached; and

Fig. 4, an end view corresponding with Fig. 3.

The embodiment of the invention illustrated in the drawing comprises an ordinary piston bugle equipped with the usual valve casing l containing the usual spring held piston valve operable by the usual valve stem I l protruding from one end of the casing 10 and equipped with the usual operating head I2 as shown.

The piston bugle proper is an old and well known construction and arrangement for the purpose, and constitutes no part of the present invention except in so far as the parts thereof cooperate with the locking arrangement to be presently described.

The locking arrangement comprises a clamping member [3 in the form of a split ring adapted to embrace and clamp the casing l0 and formed of two parts hingedly connected at l4 for the purpose. The free ends of the ring parts are provided with perforated bosses l5 and IS, the boss l5 being smooth, and the boss l6 being threaded for the reception of a clamping screw 11, having an enlarged operating head IB as shown. By this arrangement a clamping member is provided which may be readily attached to or detached from the piston valve casing Ill.

One of the clamp members I3 is provided as shown, with a lateral loop or strap 19, in which the base of an arm 20 is rigidly secured. The arm 20 is arranged to project as shown substantially parallel to the stem II and at its outer end is 1935, Serial No. 17,228

provided with an inward extending locking projection 2| adapted and arranged to engage against the inner and outer sides of the piston stem head l2 to lock the piston valve in either of its operative positions. The arrangement is such that a when the piston valve is in one of its operative positions with the operating head l2 extended to its fullest extent, the locking projection 2| may be adjusted to engage against the inner side of the head I2 and lock said head and piston valve in that 10 position as indicated by the full lines in Fig. 2. When it is desired to lock the piston valve in the other of its operative positions, the clamp I3 is removed, the head [2 depressed into the dotted line position indicated in Fig. 2, and the clamping member replaced on the casing [0 to cause the locking projection 2| to engage against the outer side of the head l2 as indicated by the dotted lines in Fig. 2, and whereby the piston valve is held in the other of its operative positions, which will be readily understood by those skilled in this art. It is to be noted that the two locked positions of the piston valve are thus controlled by the combined thicknesses of the head l2 and the locking projection 2! so that obviously these thicknesses must be made substantially equal to the effective operative stroke of the piston valve. It is also to be noted that the clamping screw I1 is relatively short in length with reference to the extent of the engagement of the locking projection 2| with the head l2, so that said clamping screw must be entirely disengaged from the boss IS in order to remove the locking projection 2i from engagement with the head I2. This arrangement, therefore, necessitates removal of the clamp in order to change the adjustment of the valve piston, thus requiring the use of both hands in effecting such a change. In actual use these bugles are often used in bugle contests and tests in which use of the piston valve is not permitted, and this arrangement, therefore, prevents unauthorized or surreptitious use of the piston valve during such contests. The specific form and arrangement of parts is a simple and effective one for the purpose.

While I have illustrated and described the preferred form of construction for carrying the invention into efiect, this is capable of variation and modification without departing from the spirit of the invention, I, therefore, do not wish to be limited to the precise details disclosed, but desire to avail myself of such variations and modifications as fall within the scope of the appended claims.

I claim:

1. The combination with a piston bugle having a piston valve casing, a piston valve operating therein, and a piston stem protruding therefrom and provided with a head at its outer end, of means engaging said head for locking said piston valve in either of its operative positions.

2. The combination with a piston bugle having a piston valve casing, a. piston valve operating therein, and a piston stem protruding therefrom and provided with a head at its outer end, of means engaging the inner and outer sides of said head for locking said piston valve in either of its operative positions.

3. The combination with a piston bugle having a piston valve casing, a piston valve operating therein, and a piston stem protruding therefrom and provided with a head at its outer end, of a clamp detachably embracing and engaging said casing, an arm on said clamp provided with a locking projection engaging the inner and outer sides of said head for locking said piston valve in either of its operative positions, the combined thicknesses of said head and projection substantially equalling the eifective operative stroke of said piston valve.

4. The combination with a piston valve casing, a piston valve operating therein, and a piston stem protruding therefrom and provided with a head at its outer end, of a clamp in the form of a split ring having two parts adapted to embrace the periphery of the casing, hinged together at one side and provided at their free ends with perforated bosses, one of which is smooth and the other threaded; a clamping screw passing through the smooth boss and engaging the threaded boss; and an arm on said clamp projecting substantially parallel to said stem and provided with an inwardly extending locking projection engaging the inner and outer sides of said head for locking said piston valve in either of its operative positions, the combined thicknesses of said head and projection substantially equalling the effective operative stroke 01' said piston valve, and the length of said clamping screw being such that it will disengage its threaded boss before said locking projection disengages said piston stern head.

5. A look for a piston bugle comprising a clamp adapted and arranged to embrace and engage detachably the piston casing; and means on said clamp adapted and arranged to engage the head of the piston stem for locking the piston in either of its operative positions.

6. A look for a piston bugle comprising a clamp adapted and arranged to embrace and engage detachably the piston casing; and an arm on said clamp projecting substantially parallel to said stern and provided with an inwardly extending locking projection adapted and arranged to engage the inner and outer sides of the head of the piston stem for locking the piston in either of its operative positions the combined thickness of said head projection substantially equalling the effective operative stroke of said piston valve.

7. A lock for a piston bugle comprising a locking arm attached to the piston casing and provided with an inwardly extending locking projection adapted and arranged to engage the inner and outer sides of the head of the piston stem for locking the piston in either of its operative positions, the combined thicknesses of said head and projection substantially equalling the effective operative stroke of said piston valve.