US1290853A

US1290853A - Firearm-barrel-cooling mechanism.

Info

Publication number: US1290853A
Application number: US164919A
Authority: US
Inventors: John C Sturgeon
Original assignee: Individual
Current assignee: Individual
Priority date: 1916-12-22
Filing date: 1917-04-27
Publication date: 1919-01-07
Anticipated expiration: 1936-01-07

Description

I. C. STURGEON.

FIRE/IRM BARREL COOLING MECHANISM.

APPLICATION FILED APR. 27, |917.

Patented Jan. T, 1919.

I l E;

JOHN C. STURGEON, 0F ERIE, PENNSYLVANIA.

FIREARM-BARREL-COOLING MECHANISM.

Specification of Letters Patent.

Patented J an. 7, 1919.

Original application filed December 22, 1916, Serial No. 138,330. Divided and this application led April 27, 1917. Serial No. 164,919.

To all whom z't may concern.'

Be it known that I, JOHN C. STURGEON, a-citizen ofthe United States, residing at Erie, in the county of Erie and State of Pennsylvania, have invented certain new and useful Improvements in Firearm-Barrel-Cooling Mechanism; and I do hereby declare the following to 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 accompanying drawings, and to the letters of reference marked thereon, forming part of this specification.

This application being a division of the application filed by me December 22, 1916, Serial No. 138,330.

` The improvements which form the subject of this application relate to fire-arms, and particularly to mechanism for cooling the barrels thereof, and has for its object the more effective cooling of the barrels of fire-arms by the use of air, than is accomplished by the air-cooling mechanism now in use. In accomplishing this result I secure to the barrel longitudinal radiating strips of highly conductive metal preferably longitudinally corrugated, so as to present the maximum radiating surface to the action of air passing thereover, so secured to the barrel that effective conductive contact therewith is at all times maintained regardless of any changes of temperature of the barrel. These radiating strips extend from the periphery of the barrel outward, and are inclosed by a metal shell open at its rear end, and extending beyond the end of the barrel at its front end. I preferably secure the radiating strips to the barrel by makin longitudinal grooves in the periphery 0 the barrel and firmly securing the inner edges of the longitudinal radiating strips therein, so that no differences either of the temperature or expansion of the metals comprising the barrel and the radiating strips can, in any way, affect the conductive contact between them.

A further object of my invention is to provide longitudinal arms secured to the muzzle end of the barrel to which conical deflecting disks are secured within the shell covering the radiators, whereby a considerable portion of the gases of discharge deflected outward so as to produce a strong draft of air through the shell from the open rear end thereof over the radiators inclosed thereby. These and other features of this invention are hereinafter fully set forth and described and illustrated in the accompanying drawings in which:-

Figure l, shows a longitudinal section partially in elevation, of a gun barrel embodying my invention.

Fig. 2, shows an enlarged View of a transverse section of the same on the line :c in Fig. l.

Fig. 3, shows an enlarged view of a transverse section of a modification of my invention.

Fig. 4, shows an enlarged front end view in elevation, of my invention.

In these drawings 1 indicates a gun-barrel provided at its rear end with an interrupted screw thread 2 'by means of which it can be secured to a gun-frame (not shown), 3 a metal shell open at its rear end and extending some distance beyond the muzzle end of the barrel In the periphery of the barrel 1 as shown in Figs. l and 2, I make longitudinal dovetailed grooves 4 adapted to receive the properly formed inner edges 5 of thin sheet metal radiators 6 of superior heat conducting properties, such as copper or aluminum. These radiators 6 are preferabl provided with longitudinal corrugations substantially as shown in Figs. 1 and 2, whereby the present the maximum of radiating su ace to the air passing over them.

In Fig. 3 I show a modified construction in which I make radial grooves 8 in the periphery of the barrel 1 of such width that the inner edges 9 of longitudinal strips 10, of thin radiating metal, such. as copper or aluminum, can be inserted as illustrated in Fig. 3, and as copper and aluminum expand under heat approximately one-half times more than steel, any increase of temperature which will expand the barrel, will also expand the edges 9 of the radiating strips 10 inserted in the slots 8, so that they will be firmly pinched and 55 passing from the muzzleof the barrelare clamped by the slots 8, forming a complete conductive contact therewith, so as to effectively conduct heat from the barrel.

Between the barrel 1 and the inside of the shell 3 I preferably provide the radiating strips 10 with corrugations 11, as illustrated in Fig. 3.

On the muzzle end of the barrel 1 I preferably secure a collar 12 provided with arms 13 extending longitudinally outward in line with the bore 14 of the barrel, and to these arms I secure preferably a plurality of conical disks 15 Within the end portion 16 of the shell 3 so that a considerable portion of the gases from the discharge 'of the gun will be deflected outwardly by said disks, producing a strong suction through the shell 3 and thereby drawing a strong current of air over the radiators secured to the barrel, and withdrawing the heat therefrom. The eectiveness" of the conductive contacts between the barrel and the radiators, the increased available radiating surface presented by the corrugations therein, as well as the action of the conical disks 15 at the end of the barrel, and the operation of the several parts of the device in correlation to each other, as hereinbefore described, it is believed render further description thereof unnecessary.

Therefore having shown and described my invention so as to enable others skilled in the art to utilize the same, what I claim as new and desire to secure by Letters Patent, is-

1. In a gun, a barrel having longitudinal grooves in its periphery, longitudinal radiators of thin conductive metal having theirinner edges secured in said grooves Lacoste so as to maintain conductive connection between the barrel and radiators under all changes of the temperature thereof.

2. In a gun, a barrel having longitudinal grooves in the periphery thereof, longitudinally corrugated radiators of higher conductive metal than that of the barrel having their inner edges so inserted in .and secured in said grooves as to maintain a maximum conductive connection between the barrel and radiators under all variations of the temperature thereof.

3. In a gun, a barrel, arms secured to the muzzle end thereof parallel with the axis of the bore of the barrel, conical disks secured to said arms, and a shell open at both ends surrounding, but out of contact with the peripheries of said disks.

1. In a gun, a barrel, longitudinal radiators secured to the periphery thereof, arms secured to the muzzle end ofthe barrel parallel with the axis of the bore of the barrel, conical disks secured to said arms, and a shell open at both ends inclosing the barrel, radiators and disks.

5. In a gun, a barrel having longitudinal grooves in the periphery thereof, longitudinal radiators of thin conductive metal having their inner edges secured'in said grooves so as to maintain conductive connection between the barrel and the radiators under all variations of temperature, arms secured to the muzzle end of the 'barrel parallel with the bore thereof, conical disks secured to said arms, and a shell inclosing the barrel, radiators and disks.

In testimony whereof I affix my signature.

JOHN C. STURGEON.