US387458A - Self and joseph e - Google Patents

Description

(No Model.)

P. J. SMITH.

' TOOL FORv PACKING STUP'FING BOXES. No. 887,488.I Patented Aug. r7, 1888.

N Firms. Fnwumagnpher, wa-mngwn. D. c.

Dire @rares 'terciaria NICE@ PETER J. SMITH, CF PHILADELPHIA, PENNSYLVANIA, ASSIGNCR TO HIM- SELF AND JOSEPH E. C. SMITH, OF SAME PLACE, AND WILLIAM B. SMITH, OF VASHINGTON, DISTRICT OF COLUMBIA.

TOCL. FOR PACKING STUFFING=BOXES.

SPECIFICATION forming part of Letters Patent No. 387,458, dated August 7, 1888.

Application filed March 20, 1888. Serial No. 27,84. (No model.)

To aZZ whom t may concern:

Be it known that I, PETER J. SMITH, a citi zen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain newr and useful Improvements in a Tool for Packing Stuffing Boxes and for Packing Heater, Condenser, and other Tubes; and I do hereby declare the following to be a full, clear,

1o and exact description of the invent-ion, 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 letters or iigures of reference marked therer5 on, which form a part of this specification.

Referring to the drawings, Figure 1 is a side elevation; Fig. 2, an end elevation. Fig. 3 is a like view, partly in section; Fig. I atop plan View, and Figs. 5 and 6 longitudinal verzo tical sections, of a tool embodying my invention.

The invention relates to a tool adapted for use in packing` deep stuffingboxes, such as the stuffing-boxes of globe-valves, but more 2 5 especially adapted for packing heater and condenser tubes 5 and it has for its obj eet to provide means whereby such may be conveniently and effectually packed, and whereby the packing may be cut out when worn and repacked without trouble.

The invention consists, essentially, in a tubular packer -rod adapted to fit upon the part to be packed. or around which the packing is to be laid, said packer being provided with a guide slot or groove to guide the packing-strand and wind it around the said part when the tool is revolved, substantially as here` inafter fully described, and as set forth in the claims.

The invention further consists in providing the tool with a cutter-lip for the purpose of cutting out worn packing, substantially as hereinafter fully described, and as set forth in the claims. v

5 The invention further consists in the combination, with the tool, of a revoluble carrier for the packing and of a friction -brake to check and regulate the rotation of the carrier, substantially as hereinafter described, and as 5o set forth in the claims.

The difficulties encountered in packing deep stuffing-boxes or in packing the ends of condenser or heater tubes are well known to those eonversant with this branch of mechanics. These difficulties are entirely Overcome by my invention, in that the packing may be introduced into the stuffing-box or into the socket or bearing for heater and condenser or other packed tubes, wound around the same in a uniform manner, and packed to any desired 6o degree. In a similar manner old packing may be readily cut out for the purpose of repacking.

As shown in the drawings, thetool consists of a tubular packer-rod, 'A, adapted to fit on 65 aspindle or over the end of a tube around which the packing is to belaid. The packerrod A is provided with a handle, A, of any suitable or desired form, for conveniently revolving said rod; and such handle may form a separate or an integral part of the rod, as may be desired, and may be provided with a flattened outer face, at, Fig. 6, so that a hammer or niallet may be brought into use for condensing the packing.

The tubular portion of the packer-rod is slotted, as shown at a, which slot may be parallel to the axis of the rod, the outer end of said slot curving laterally, as shown at a', or said slot may be formed on a spiral line eX- 8e tending from one end to the other of the tubular portion. At that end of the slot which lies in the direction in which the tool is re volved in winding the packing-that is to say, at the left end of the slot, Figs. 2, 5, and G-is formed a cutting-lip, ai.

Instead of slotting the rod along the tubular portion thereof, said rod may be grooved for the reception of the packing-strand, said groove terminating in a slot at the end of the 9o rod, on one side of which is formed the cutting-lip ai.

B indicates a spoolholder, of rectangular form, provided with bearings b3 b for the reception 0f the packer-rod A andthe handle A', respectively, said parts being detaehably connected with the spool-holder by means of set screws b5 1f.

One journal for the spool C consists of a cone-screw, b, while the other journal consists roo of a cone-pin, b', projecting from a springplate, Zr', secured to the spool-holder B. The stress of the spring on the journal b and the pressure of the latter in its bearings in the spool serve to retard or cheek the rotation of the spool, so that the packing will be fed as it is wound around the part to be packed, to prevent choking or obstructing the operation of the tool.

To guide the packing properly into the slot or groove a, I provide a guideeye, a3, at the rear end of such slot or groove, as shown.

The handle A may be connected directly with or forni an integral part of the packerrod, and the spool-holder or frame may be secured to the packer-rod by means of a set screw or screws, c, the packer-rod being fiattened for the reception of the base-plate of the spoolholder, as shown in Fig. 8. A bobbin, G, may be used instead of the spool C and spool-holder B and mounted on the packer-rod itself, as shown in Fig. 6, or either of these devices may be dispensed with.

The operation of the tool is as follows: The end of the packingstrand being laid into the slot or groove (t of the packing-rod and then around the part to be packed,said rod is pushed home and the tool revolved from left to right, the cutting-lip of serving as an abutment for the paeking-strand, while the end of the slot a serves to guide said strand around the part to be packed. When several convolutions have been wound on the part to be packed, these are then condensed by using the tool as a raminer, to assist which a hammer or mallet may be used. A further length of packing is then wound on and condensed, and so on until the operation is completed, when the end of the packing strand is cut of.

To remove an old packing, the tool is revolved in a reverse direct-ion, onfrom right to left, so as to cause the cutting-lip to bite into the packing, the tool performing the function of a hollow7 or tubular auger, unwinding the packing which may be drawn out through the slot a, as it is unwouud or out.

Having described my invention,what Ielaim is- 1. The herein-described packing-tool, consisting, essentially, o1" a tubular packerrod adapted to fit upon the part to be packed, and provided with a longitudinal guide-slot eX- tending along the tubular portion of the rod for the receptionand guidance of the packingstrand, whereby, when said rod is placed upon the part to be packed and revolved, said strand will be wound around such part, substantially as and for the purposes specified.

2. The l1ereindescribed packingtool, oonsisting of a tubular packer-rod adapted to iit upon the part to be packed, and provided with a longitudinal slot extending along the tubular portion of the rod for the reception and guidance of the packing-strand, in combination with a revoluble carrier for the packing, substantially as and for the purposes specified.

3. The hereindeseribed packing-tool, consisting of atubular packer-rod adapted to fit upon the part to be packed, and provided with a longitudinal slot formed in the tubular portion thereof, said slot curving from right to left at the open end of the said tubular portion of the rod, substantially as and for the purposes specified.

4. The herein-described packing-tool, consisting of a tubular packer-rod adapted to fit upon the part to be packed, and provided with alongitudinalslotformedinthe tubular portion thereof, one of the walls of said slot having its outer end formed into or provided with a cutting-lip, whereby the rod is iliade to perform the function of an auger when revolved in a given direction, substantially as and for the purposes specified.

5. The herein-described packing-tool, consisting of a tubular packer-rod provided with a guide-slot for the packing-strand, in combination with a revoluble packing-carrier and a friction-lirake for said carrier, substantially as and for the purposes specified.

6. A tool of the class described, comprising a tubular packer-rod adapted to fit upon the part to be packed, and provided with a guide groove or slot for the reception and guidance of the packing, a handle for said rod, and a revoluble carrier for the packing, said parts being detachably connected together, substantially as and for the purposes specified.

7. rlhe herein-described packing-tool, cousisting of a tubular packer-rod, A, provided with a slot, a, and a cutting-lip, at, in combination with the spool B, and thc spring-plate b2, provided with the cone-pin Z2', that consti tutes one of thejournals for thespool and opcrates as a friction-brake, substantially as and for the purposes specified.

In testimony whereof I afx my signature in presence of two witnesses.

PETER JuStIITH.

"Witnesses:

WILLIAM F. Luana, Jos. E. C. SMITH.

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