US1674398A - Piston valve for cornets - Google Patents

Piston valve for cornets Download PDF

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Publication number
US1674398A
US1674398A US18336127A US1674398A US 1674398 A US1674398 A US 1674398A US 18336127 A US18336127 A US 18336127A US 1674398 A US1674398 A US 1674398A
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US
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Grant
Patent type
Prior art keywords
spring
valve
piston
cornets
barrel
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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Inventor
Alfred J Johnson
Original Assignee
J W York & Sons
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10DSTRINGED MUSICAL INSTRUMENTS; WIND MUSICAL INSTRUMENTS; ACCORDIONS OR CONCERTINAS; PERCUSSION MUSICAL INSTRUMENTS; MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR
    • G10D9/00Details of, or accessories for, wind musical instruments
    • G10D9/04Valves; Valve controls

Description

June 19, 1928.

A. J. JOHNSON PISTON VALVE FOR CORNETS Filed April 15, 1927 INVENTOR A TTORNE 1S Patented June 19, 1928.

UNITED STATES PATENT OFF-ICE.

ALFRED :I. JOHNSON, 0F GRAND RAPIDS, MICHIGAN, ASSIGNOR TO J. w. YORK & soNs,

' or GRAND RAPIDS, MICHIGAN.

PISTON VALVE FOB CORNETS.

Application filed April 13,

This invention relates to improvements in piston valves for cornets or'similar wind instruments.

The object of the invention is to provide an improved piston and spring mechanism for such valves.

A further object is to provide a structure which shall be easily assembled and that will not get out of order in use and in which the key action shall be smooth and easy.

Objects relating to details of construction will appear from the detailed description to follow. The invention is defined in the claims. A structure embodying the features of my invention is illustrated in the accompanying drawing, in which:

Fig. 1 is an elevation view of a set of keys for a cornet or trumpet.

Fig. 2 is an enlarged detail elevation view of one of the valve pistons and spring mechanism removed from the valve socket.

Fig. 3 is an enlarged detail sectional view taken on line 33 of Figs. 1, 2 and 4, showing the detailed arrangement of piston socket and spring means, the guide cap and key button being omitted.

Fig. 4 is a detail cross-sectional view taken on line 4-4 of Figs. 1, 2 and 3, the spring being omitted.

Fig. 5 is a detail elevation view of the valve, key, stem and extension pin in disassembled relation.

The parts are referred to by their nuinerals of reference which are the same in all the views.

1 is the valve assembly of a cornet or trumpet. 2 is the valve casing. 3 is the baluster. 4 is the baluster cap forming the guide for the key stem. 5 is the valve piston. 6 is the spring barrel slotted at 61. 7 is the valve key stem. 8 is the key button. 9 is the return spring. 10 is the star stop member for the spring with projections 101 over which plays the vertical slot 61 in the spring barrel 6. j

The piston 5 is extended at 51, 51 at each side of the slot 61 and provides an extension piston bearing surface. The valve casing 2 is provided with the usual extension bearings 22 extending up into the baluster 3. The valve stem 7 has a projecting flange or 1927. Serial No. 183,361.

collar 71 with a screw-threaded boss 72 on its under side forming the valve top.

The stem 7 is provided with a downwardly-extending pin 7 3 preferably screw-threaded thereto which serves to retain the spring 9 in line. 10 is the star stop member which has extensions 101 which extend through the vertical slot 61 and engage in recesses in the valve casing extension 22. It is centrally perforated at 102 to receive the pin 73 which reciprocates therethrough.

From this description it will be seen that when the key button 8 is depressed, the valve plunger will be depressed, compressing the spring 9 against the star stop member 10. When the pressure is released the spring returns the piston to normal, the same being very effectively guided by the engagement of the projecting ends 101. Because the pin extension 73 is disposed through a central aperture in the stop plate 10, it cannot be displaced accidentally by striking the projecting ends, and the projecting ends are maintained in correct position to engage in the slots 23*.

The structure can be somewhat modified without departing from my invention, as defined in the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In a valve structure for wind instruments, the combination of a valve casing, a baluster, a piston with upwardly extended bearing surfaces at opposite sides, a spring barrel disposed between the bearing surface extensions with longitudinal slots, a spring within said barrel, a perforated star stop member within the spring barrel with extensions through the said slots to engage the casing, and a key cap with stem with a rod extension therefor disposed within the spring and extending through the said star stop member, coacting as specified.

2. In a valve structure for wind instruments, the combination of a valve casing, a baluster, a piston, a spring barrel, a spring within said barrel, aperforated star stop member within the spring barrel, and a key cap with stem with a rod extension therefor disposed within the spring and extending "a baluster, a spring barrel, a spring Within said barrel, a perforated star stop member- Within the spring barrel, a pistonhavmg a upwardly extending bearing surface at 0ppositesides disposed above saidst-ar seat to 10 cooperate with the bearing surfaces of the valve casing.

In Witness whereof I have hereunto set my hand.

seat for said star stop member and having Y ALFRED J. JOHNSON."

US1674398A 1927-04-13 1927-04-13 Piston valve for cornets Expired - Lifetime US1674398A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US1674398A US1674398A (en) 1927-04-13 1927-04-13 Piston valve for cornets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1674398A US1674398A (en) 1927-04-13 1927-04-13 Piston valve for cornets

Publications (1)

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US1674398A true US1674398A (en) 1928-06-19

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US1674398A Expired - Lifetime US1674398A (en) 1927-04-13 1927-04-13 Piston valve for cornets

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