US656425A - Apparatus for enlarging ajutages of metal tubes. - Google Patents

Description

No. 656,425. Patented Aug. 2|, I900.

(Application filed Oct. 2, 1899.

(No Model.) 2 Sheets$haet Wm MW,

THE NORRIS Pzrsas co. PHOTO-LYING WASHINGTON, a, c,

No. 656,425. Patented Aug. g1, I900.

F. SCHILLING 8L J. SCHURZ.

APPARATUS FOR ENLAR HING AJUTAGES 0F METAL TUBES.

(Application filed Oct. 2, 1899.) (No Model.) 2 Shaets8heat 2.

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i U I E STATES PATENT OFFICE.

' FRITZ sc -untrue h JoHA so APPARATUS FoR ENLARGING nunz, or NUREMBERG, GERMANY.

AlUTAG ES 0F METAL TUBES.

. SPECIFICATION forming part ofLetters latent No. 656,425, dated August 21, 1900.

Applio ation filad October 2, 1899.

TodZZ whom iz'z may concern: Beit known that we, FRITZ SCHILLING and JOHANN. SCHURZ, mechanicians, subjects of the King of Bavaria,residing at Nuremberg, Seuffertstrasse 10, in the Kingdom of Bavaria and German Empire, have invented certain new and useful Improvements in Apparatus for Enlarging Ajutages of Metal Tubes; and we 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.

This invention relates to devices for enlarging and calibrating metal ajutages from the conical form in which they are originally produced on metaltubes; audit consists in the apparatus hereinafter described, and shown in the accompanying drawings, in which Figure lis an elevation of the complete apparatus embodying our invention; Fig. 2, a sectional detail showing the enlarging or calibrating tool entering the aj utage in axial line; Fig. 3, a like detail showing said tool in a more advanced positionof action with the ajutage practicallycalibrated; Fig. 4, an enlarged section onthe line 4 4 of Fig. 1, and Fig. 5 a like section on the line 5 5 of Fig. 1. Between bearings a is a pulley a, mounted on and driving a shaft b, which is capable of longitudinal adjustment. At one end of this shaft is a box or socket c, in which is pivoted the carrier of the calibrating-tool d, hereinafter termed the j expander. The working end of the expander is conical, the acuteness of the cone depending upon the diameter to which the ajutage is to be calibrated. The angular heel d of the expander extends lengthwise of the box and is pressed outward by a spring, as shown, so that the expander tends normally to assume a position in axial line with the shaft. Embracing the end of the shaft and the tool-carrier is a sliding collar e, which when in position over the pivot of the carrier, as indicated in Fig. 2, serves, in conjunction with the box and the spring, to hold the expander in said "axial position, but when slid back throws the expander out of said axial line to a degree depending upon the distance to which the collar is moved. This collar is shifted lengthwise of the shaft by means of a hand-lever e, pivoted upon Serlhlllo. 732,374. aromas.

in lugs from the bed-plate F. Thehandaffixed to said sleeve f, and in the slot of which is placed an adjustable stop g, which may be set toward or from the hand-lever.

of the heel cl'of the expander, forced outward by the spring, will at first cause the sleeve or collar 0 to be carried along with it, swinging the hand-lever around until it comes in con tact with the stop g whichwill be so set as to contact with the lever at the moment that the lateralmovement of the expander should begin to take place. Thereafter the further advance of shaft 19 and expander will cause the collar 6" to travel relatively backward over the heel d, swinging the expander outward. The shaft 17 is moved lengthwise bya second hand-lever h, suitably pivoted. As alreadystated, a box 0 is formed at one end of the shaft in which the expanding tool is pivoted. This box may beenlarged over the regular diameter of the shaft, asshown in Figs. 1 and 5, to afford shoulders 9 behind which a peripherally-grooved collar 9 is arranged to'slide longitudinally on the shaft. This collar is embraced by a yoke from the bracket 9, so that when the shaft is projected it will move relatively back therealong, but when retracted will come against the shoulders and serve as a stop. it

The metal tube a, with the ajutage z" of conical form, is laid before the rotating expander d, as indicated in dotted lines in Fig. 2, and the shaft is then fed up toward it by means of the hand-lever 7b, carrying with it the axiall y-disposcd expander,which pierces and distends it in a right line until the mouth is sufficiently opened, when, according to circumoperated to throw the expander gradually from the position represented in full lines in said figure to that shown in Fig. 3, or the stop 9 may be so setas to accomplish this result concurrently with the gradual penetration. When the expander has fully calibrated the ajutage, the work is stopped and the shaft is retracted into position for a succeeding operation.

We claim-- 1. The combination of the longitudinally sleeve f, which is fixed upon rod f,he1d fast adjustable rotating shaft, the tool-carrier lever moves overthe slotted bracket g, rigidly N ow if the shaftb be projected the resistance stances, the hand-lever may be manually with its angular heel pivoted in the end thereof, the conical calibrating-expander carried thereby, the spring acting on the heel of the a of, the conical calibrating-expander carried thereby, the spring acting on the heel of the v expander to force it toward an axial position, I 5

the sliding collar arranged to'hold the expander in axial line with the shaft during its incipient entering and spreading movement, a hand-lever for shifting said collar, and a stop adjustable tolimit the movement of said hand- 20 lever under the forward play of the shaft.

In'testimony whereof we aflix our signatures inpresence of two'witnesses.

FRITZ SCHILLING. JOHANN SOHURZ.

Witnessesz' p p v A X WIELE,

MAX SCHNEIDER.

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