US2121728A - Blowtorch and attachments - Google Patents

Description

5 Sheets-Sheet l C. C. BOYD Filed July 10, 1935 BLOWTORCH AND ATTACHMENTS June 21, 1938.

6. Gl 50 YD INVENTOR.

ATTORNEY June 2l, 1938. c. C. BOYD BLowToRcH AND ATTACHMENTS Filed July 10, 1935 3 Shees-Sheefl 2 R. m w m ww D W Q wlm a.

Mgg/U MM ATTORNEY June 2l, 1938. C. C. BOYD LowToRcH AND ATTACHMENTS Filed July 10, 1955 3 Sheets-Sheet .'5

INVENTOR.

`. 6. BYD

A TTORNEY `Patented June '21, 1,938

UNITED STATES PATENT CFFICE 2,121,728 BLOWTQRCH AND ATTCHMENTS Carl C. Boyd,I Rock Island, I ll. Applicartllln July 10, 1935, Serial N0. 30,631

4 Claims. (Cl. 158-33) The present invention relates to improvements from the left in Fig. 16, as indicated by the arin blowtorches and in attachments for use thererows and line I'I-I 1, Fig. 16. with. Among the objects of this invention are 'Fig. 18 represents an end view, detached, of to provide a blowtorch which is improved in varithe hood shown in Figs. 1, 2, and 4 as encasing the 6 ous ways over heretofore existing structures of head of the blowtorch. 5 this type; to provide a torch to which can be ap- Reference will now be made in greater detail plied several attachments; to provide improved to the annexed drawings for a morecomplete attachments of various sorts which can be applied description of p this invention. The blowtorch to a blowtorch to adapt it for various uses; and proper comprises, essentially, a body I, head 2, l such further objects, advantages, and capabilineck 3, and feet 4. The body I is provided with 10 ties as will hereafter appear and as are inherent a hook 5 whereby the torch may be suspended as, in the construction disclosed herein. My invenfor example, when being used by a telephone tion further resides in the combination, construclineman working in an elevated position, such as tion, and arrangement of parts illustrated in the on a pole. A pump 6 extends into an end of the accompanying drawings and, while I have shown body I and comprises among its parts a cap I lli/I therein preferred embodiments of the various which the barrel of the pump has screw-threaded parts of this invention, I desire the same to be connection. This cap 1 has screw-threaded conunderstood as illustrative only and not to be innection with the.cap 8 of the torch body I, a

terpreted in a limiting sense. gasket 9 being inserted between the two caps 'I In the drawings annexed hereto and forming a and 8 to prevent leakage at this joint. 'I'he cap 20 part hereof, 8 may be either screw-threaded to the cylinder Fig. l is a plan view and Fig. 2 an elevation of of the body of the torch or connected thereto my improved torch; permanently by brazng or soldering. The cap 8 Fig.. 3 represents 'an end elevation as viewed is preferably flattened at one point, as indicated from the left end of Fig. 2, as indicated by the in Figs. 1, 2, and 4, to have an opening formed 25 arrows and line 3--3 in that figure; therein for the reception of the plug I0, between Fig. 4 represents a longitudinal section of the, which and the cap 8 is a gasket 9a. This openstructure shown in Figs. 1 and 2; ing constitutes the lling opening whereby the Fig. 5 represents a transverse section taken fuel is put into the body of the torch. substantially along the plane indicated by the line Within the cylinder of the pump 6 is a pump 30 5 5, Fig. 4; rod Il which is enlarged at its outer end and Fig. 6 represents a transverse section taken subscrew-threaded, as indicated at I2, S0 that it mail" stantially along the plane indicated by the line be screwed into corresponding threads in the 6 6, Fig, 4; cap 1. This enlarged portion seats against the Figs. '7, 8, and 9 represent in elevation various bottom 0f the hole in the Cap S0 aS ISO Prevent 35 shapes of soldering tips as applied to the mouth leakage areurld the Dump rod. A knob I3 is of the blowtorch; provided which serves as a handle for operating Fig. 10 represents a transverse section taken the pump rod and for turning this t0 Cause Seat' Substantially along the plane indicated by the ing of the threaded portion against the bottom of the'hole, and the reverse. A piston Id of any 40 40 une'ln-lu Fi .9;

Fig. 11 reprsents a melting bowl applied to approved construction maybe attached to the the nouth of the torch. inner end of the pump rod and serves to force air into the interior of the blowtorch. A spring- Flg- 12 represents a longitudmal Section taken pressed valve member I5 seats in a depression substantially along the plane indicated by the in the end of the pump and also serves to prevent 45 llne |2-|2. Fle- 11; escape of gasoline or air from the interior of the Fig. 13 represents a plan view 0f a Stove attaehtorch. A plug I6 is provided with an opening ment t0 be applied t0 the meuth 0f the torch; for the reception of the spring I1, as is evident Fig. 14 represents a longitudinal section taken from F1g 4, y Substantially along the plane indicated by the An automatic valve body I9 has a ball valve 20 50 line lli-I4, Fig. 13; therein for controlling the ow of fuel there- Figs. 15, v16. and 17 represent. reswetively. a through. When the head ofthe torch is turned side elevation, a plan view, and an end elevation upwardly, the fuel will run to the end of the of a paint-burning attachment to be applied to body `in which the pump is located and the ball the mouth of the blowtorch, Fig. 17 being taken 20 will roll to the corresponding end of the openf 55 ing 2i This permits the gasoline to ilow through the pipe 22 into the chamber 2|. and from thence through the pipe 23 to the wicking 24 in the neck 3. From here it iiows out through the channels leading to the nozzle 2l where it vaporizes and4 burns, the flame shooting out of the mouth 28 in the common way. The pipe 23 and neck 3 are connected to a cap 23a which may be soldered, brazed, or connected by screw-threading to the body'i, but it is now considered preferable to unite these parts by solder when they are made of metal. 'Ihe chamber 2i is sumciently inclined so that when 'the head end of the torch is raised and is used to regulate the ow of fuel tothe nozzle 25 so as to regulate the ame produced by the torch. The handle 28 is made of al material which is to a certain degree heat non-conducting, so that it will be possible to regulate the valve at any-time without getting burned, even vthough'the torch may have been operating for some time.

A hood 38 encloses the top and sidesy of the head 2 and is held to the head by means of the screws 3i. Bosses on the inside rof thel hood space the same from the head, leaving an air space between the two to reduce heat radiation from the head to the hood. This also leaves an air space through which the air can enter. to reach the slot 32 and the openings 33 to furnish, the air needed -for combustion of the fuel. As shown in Fig. 4 the feet #i are connectedby a cross member 3B, thus helpingto make a rigid construction for the support of the forward end BID of the torch to prevent burning of whatever the torch may be laid upon. A screw 35 serves as means whereby attachments may be fastened to the torch.

A pre-heating pan is shown at 36 and,A as shown in Fig. 6, the walls of this pan rise along the sides of the head to insure that the names from the burning pre-heating iluid will cause proper heating of the head so that the fuel issuing from the nozzle 25 will be in proper condition for combustion. The feet i are shown in Figs. and 6 as being pivotally connected to thev pre-heating pan at 8l. As shown in dotted lines in Fig. 2, these can be turned back out yof the Way under the head 2.

As shown in Figs. '7, 8, and 9, various types of soldering coppers can be attached to the head 2. The tip or copper 38 is of the short, heavy variety, common to heavy duty irons but, as shown in dotted lines, its base is hollow for access of the heating flame. Also, the tip is provided witha tubular projection 39 which ts in the mouth 26 of the torch and is fastened therein by means of the 'screw 35. Openings t0 extend from the hollow in the base of the tip to the surface thereof to permit escape of the products of combustion and also enable the name to reach into the tip and not be held back 4by stagnant-air therein. A cross section through the openings 48 would be similar to the cross section shown in Fig. 10.

Adaptors 4i and d2 vare provided for the tips 43 and M, the principal diierence between these encinas adaptors being\the size of opening provided for the reception oi' the tips. Of course, if desired, the tips. and 44 could be made integral with the adaptors 4i `and,42 so that these coppers would be identical with that shown in Fig. 7 except 4for thevsize and shape of the tips. It is unnecessary to specify the uses of these various tips, as they are well ,known to persons skilled in the art. Y

Reference will now be made to' the attachments shown in Figs. 11 to 18, inclusive; The

`attachment shown in Figs. 1l and 12 is a melting pot, such, for example, as a Babbitt ladle. This comprises a bowl 46 provided with pouring spouts 41 and a hollow attaching neck 48. The attaching neck is slotted, as shown at 48 for the reception of the screw -35 and isJ continued forwardly under the bowl48 in the form of a wall 50, form- Lng iaith the bottom ci' the bowl a heating chamer L Figs. 1 3 and l4.illustrate a small stove which may beattached to the mouth of the blowtorch for the heating of water, making of coiiee, frying, or any other purpose for which such -an article might be used. This stove is provided with a neck 52 which surrounds the mouth 26 whereby -to support the stove body on the torch. The

weight ofthe stove andthe article supported thereby will be, as shown by Fig. 2, nearly over the feetA 4, and the weight of the body of the torch will therefore tend to hold thetorch and supported bodyin the intended position. Grooves 53, between the narrow ribs 54, furnish exits for the products of combustion passing into the stove body from the torch. A central supporting body 55 has a hole 56 therethrough for the passage of the flame and products of combustion, this body being supported from the rim 58 by ribs 51. A deector 59 is located within the cavity in the body of the stove and tends to throw the flame upwardly, causing a better distributionv of the heat to-all parts of the stove top.

A paint-burning nozzle is illustrated in Figs.

. 15, 16, and 17, and is shown as having a neck 68 comparable to 48 in Fig. 12 and 52 in Fig. 14. This is slotted forthe reception of the screw 35 in the same manner as illustrated in Fig. 11. The mouth 8i is narrow in one direction and4 wide aring at a right angle thereto, as is obvious from Figs. and 16. Holes 62 permit the access of air 'to facilitate combustion. The shape of this nozzle will result in a wide spread ane for the burning on. of a wider strip of paint than usual in the use of a blowtorch for this purpose.

It will of course'be understood that the specic description of structure set forth above may be 4departed from without departing from the spirit of my invention as set forth in this specification and the appended claims.

Having now described my invention, I claim:

1,'A blowtorch for operation either end up, horizontally, or any intermediate position, comprising an elongated body and a head arranged with their longitudinal axes substantially parallel so that the ame of the torch will be projected in the direction of the length of the body, said body having a valve therein whose discharge end is connected to the nozzle of the head, pipes connected Ato the valve and leading to oppositel end portions of the body to draw fuel from the body and supply it to the valve, and said valve including automatically functioning means to close the discharge from one or the other of said pipes, depending upon the position of the torch with relation to a horizontal plane, the pipes being connected one to each end of the valve and each pipe extending toward the opposite end of said body and into proximity thereto.

2. A blowtorch comprising a tubular body having a pump extending through one end thereof longitudinally of the body, a head directed forwardly away from the opposite end of the body, tubular means connecting the interior of the head with the interior of the body, a hollow valve Y body located Within the blowtorch body and having an exit opening connected to said tubular member to carry liquid fuel thereto, said valve body having within its interior a rolling ball valve member, said valve body having a `pair of openings leading from opposite ends of its interior opening, and tubular members connected with said openings and extending past the valvev body and into proximity to the opposite ends of the torch body, the ball serving to close one end of the body opening or the other, in accordance with which end of the valve body opening is lower.

3. A structure as defined by claim 2 in which the valve body is mounted with its longitudinal axis making an acute angle with the axis of the torch body, the vertex of the acute angle pointing ,in a direction away from the burner of the torch.

4. A blowtorch comprising a tubular body hav'- ing a pump extending through one end thereof in the direction of the length of the body, a tubular neck extending from the opposite end of the torch body in the direction of the length of the body, a head carried by the neck and provided with an opening communicating With the interior thereof, said head having a nozzle po sitioned to direct a jet in the direction of the length of the torch -and the opening in the head connecting the nozzle with the interior of the neck. and an automatically functioning valve Within the body to insure proper flow of fuel to the neck as the inclination of the torch is changed, said valve having tubular openings therein and a ball in operative relation to said openings to control the flow of fuel through the valve, and the tubular openings having tubes connected to the ends thereof and each extending to the end of the body opposite to that end of the valve to which the tube is connected.

f CARL C. BOYD.

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