US856786A - Thawing-point. - Google Patents

Description

PATENTED JUNE 11, 1907.

H mm Na M w/TNESSES 3.65/i gym/r ATTORNEYS JOB H. LAMLEY, OF TACOMA, VASHINGKON.

Specification of Letters Patent.

Patented June 11, 1907.

Application filed February 14,1907. Serial No. 357,296.

T0 rif/ZZ who/1t 'llt 'nar/,y coll/cern:

Be it known that l, JOB H. LAMLEY, a citi- Zen of the United States, and a resident or Tacoma, in the county oi' Pierce and State of Vashington, have invented a new and lmproved Thawing-Point, of which the following is a full, clear, and exact description.

This invention relates to thawing points, such as are used in placer mining for gold. These points are used in frozen earth to a great extent, and are provided with means 'for conducting steam to the forward end or tip orP the point, which eil'ect a thawing of the ground as the point is driven in.

The object of this invention is to produce a thawing point of simple construction, having improved means for attaching the hose to the body.

A further object of the invention is to provide an improved construction for the body of the point.

The invention consists in the construction and combination of parts to be more fully described hereinafter and particularly set forth in the claims.

Reference is to be had to the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the ligures.

Figure 1 is a vertical central section through the thawing point and its adjacent parts, a portion of the point and a portion of the hose being shown in elevation; a portion of the body of the point is broken away; Fig. 2 is a front elevation of the thawing point, a portion of the body thereof being broken away; Fig. 3 is a longitudinal section through the lower portion of the point showing a modified construction; and Fig. 4 is a cross section on the line 4-4 of Fig. 1, and illustrating the manner ot attaching the hose to the point.

Referring more particularly to the parts, 1 represents the body of the point, which is of elongated form, and formed with a tapered tip 2 as shown. This body may be of Octagonal form, as indicated in Fig. 2, or it may be of round or tubular form. The upper portion of the body-1 is enlarged so as to form a head 2 adapted to be struck by a maul or hammer7 and in the lower portion of this head I provide a transverse tapered bore 3. The hose 4, which conducts the steam to the point, is attached to the neck 5 of a nipple 6, which nipple is formed at its inner end into a tapered pin or plug 7, which plug is tapered to fit the bore 3, and has a threaded extremity S projecting beyond the opposite face of the head, upon which there is mounted a nut 9 as indicated 3 the said nut being seated upon a washer 10. At the enlarged end ol the plug 7 a laterally projecting shoulder 11 is formed which is adapted to be seated against the Al'ace of the head when the nut 9 is tightened up. Just under this shoulder 11 a dowel pin 1,2 is provided, which is seated in an opening drilled radially into the side of the plug. The outer side oi' the dowel thrusts against the inner face of the shoulder 11 and the dowel projects into a recess 13 which is formed in the side oi the bore to receive it. From this arrangement, when the nipple is tightened up into position, it is locked securely against rotation. The nipple is formed with a longitudinally disposed duct 14 which extends inwardly from the end of the neck 5. At about the axis of the head 2, this duct 14 turns laterally so as to form a port 15 which emerges upon 'the lower side face of the plug 7. This port is in communication with a longitudinal duct 16 which extends throughout substantially the entire length of the body 1, emerging at the tapered point .2 thereorl as shown.

' At the inner end of the neck 5 an outwardly projecting collar 17 is formed, and

the inner end of the hose preferably abuts against the side face of this collar as shown. The hose is held upon the nipple by means ol a clamp 1S, which consists of two oppositely disposed clamping plates 19, the bodies oi: which are curved or bent around the outer part of the hose at the neck. These plates are formed with oppositely projecting lugs 20 through which clamping bolts 21 are passed, as indicated. At their inner ends, these plates 19 are formed with recesses 22 which receive the collar 17 in suoli a way that shoulders 23 are formed on the plates which abut against the inner face oi the collar as shown. Freni this arrangement, when the clamp is tightened on the nipple it becomes impossible to dislodge it by pulling it toward the outer end of the nipple; at the same time, the hose is securely clamped. This arrangement for securing the clamp on the nipple is advantageous, particularly because it prevents the hose `from pulling itself with the clamp ofi' ot the nipple such an action as this might occur from the back pressure of the hose where high pressures are used. In

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the head 2aL above the bore 3, I provide a transversely disposed opening 24 which enables a bar to be attached to rotate the point or remove the same when desired` Instead of making the point l entirely of one piece, I may make it of two pieces', in the manner illustrated in Fig. 3. With this form of point, the head 25 is extended downwardly and provided at its lower extremity with an axial bore 26 which extends upwardly and communicates with the duct 27 which passes downwardly to carry the steam to the point. In this bore 26 the upper extremity of a bit 28.is mounted, and this bit may be welded to the head 25. The bit is formed with a tubular duct 29, which leads the steam from the duct 27 to the tip 30 of the point.

The dowel pin l2 and the recess 13 are so placed that when the plug is seated, the post 15 will register accurately with the duct 16 in the point. The manner of mounting the plug insures that a good steam-tight oint will be produced. It is evident, also, that the clamp 18 insures that a steam-tight oint will be made at the point where the hose connects with the nipple.

I-Iaving thus described my invention, I claim as new and desire to secure by Letters Patent:

1. A thawing point having a head with a transversely disposed ltapered bore, a nipple having a tapered plug received in said tapered bore, said plug having an extremity projecting beyond the face of said head, means attached to said extremity for tightening said plug in said bore, said bore having a recess in the wall thereof, said plug having a projection received in said recess and preventing the rotation thereof, and a hose attached to said nipple, said nipple. and said point having communicating ducts.

2. A thawing point having a transverse tapered bore in the upper portion thereof, a nipple having a tapered plug received 'in said bore and having a longitudinally disposed duct with a laterally disposed exten sion emerging upon the side face of said plug to form a port, said point having a duct communicating withsaid port and leading to the tip of said point, said plug having a shoulder seating against the face of said point and having a threaded extremity projecting beyond the opposite face thereof, a nut received on said threaded extremity and adapted to seat said plug in said bore, a dowel pin disposed under said shoulder and projecting outwardly from the side wall of said plug, said bore having a recess in the .wall thereof receiving said dowel pin, said dowel pin and. recess aHording means for bringing said port and said second duct into alinement.

In testimony whereof I have signed myV name to this specification in the presence of two subscribing witnesses.

JOB H. LAIILEY.

Witnesses:

J. W. A. NICHOLS, T. J. GRUBB.

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