Improvement in pneumatic railways
US RE7503 E
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Description (OCR text may contain errors)
Ressu'ed Feb. 13
W H.. BAILEY'.-
IINITED STATES n PATENT OFF-Ica.
WILLIAM H. BAILEY, or New YonK, N. Y'.
IMPRQVEMENT iN' PNEUMATIQ RAlLwAvs.
Specification forming part of Letters Patent No. 182,545, dated September 26, 1876 ;;reissue No. 7,503dated February 13, 1877; application tiled December 16, 1876.
To all 'whom it may concern: I
Be it knownr that I, WILLIAM H. BAILEY,
0f the city, county, and State 'of New York have invented a new and useful Improvement, in Pneumatic Railways; and l hereby declare that the following is a full, clear, and `enact description of the same, reference being had,
to the accompanying drawing, forming apart of' this specification, in which the iigure represents a conductory, shown partly in section to expose the carrier, and a full sectional view of the coupling. f
This invention relates to pneumatic railways; and it consists in the combination of a. hollow conductory composed of metal that .has been drawn or rolled in the direction of -`the length of said conductory, and-a suitable 'carrier, as hereinafter fully described.
To enable others to manufacture and use my invention7 I will proceed to describe a device embodyingit.
In the drawing, A A representthe conductory, of circular shape in cross-section, and partly broken away to expose the carrier. 1 3 is the carrier, which is usually made o f felt, and in the form shown; but it maybelma'de Vof any suitable material and in any ofthe Iknown forms. C is the coupling-nut, constructed with a smooth aperture, d, about equal'in diameter to the external diameter of the condnctory, and a threaded chamber to receive the collars b c, which .are secured to the adjoining ends ofL the sections Thecollar b is made plain, and reduced in thick-ness equal to the depth of the external thread Aupon the adjoining collar c, to allow it to pass These collars are secured to the ends ot' the adjoining sections of the conductory by a tine screw-thread, as shown; but any well-known or equivalent means may be substitutejl.
When the nut is applied, the inner end of its threaded chamberk engages with the edge of the plain collar b, and the threaded portion of said chamber with the threaded collar c of the adjoining section, and the parts are drawn firmly together. madtJ true, and a close joint secured without thel use ot' packing; but packing' may be `in-` troduce-hit necessary.
When the nut is disengaged, it may be The ends ofthe sections are,
moved along theacondnctory entirely clear of the joint. This forms an essential feature, especially when the conductory is located between the walls ofa building or embedded in the ground, as a section may be placed or removed withoutdi-sturbing eitherof the sectionsadjoining, Y l t Y Theconductory is vprelerably made of brass,
which is first cast in'suitablemolds ofthe size and form required, and-'then drawn or rolledl in the direction 'of i'tslelrgth by the'proces'si".
well known in the manufacture of drawn or rolled tubes,
This process of construction produces a conductory' embracing many-'features which are indispensabie-to its successful use for 'this purpose, its eiect being to' dispos e the .bers
of the metal composing the condnctory longitudinally and in the direction traversed by the carrier, and also to render the' metal hard and of great density, iid yet allow theconduotory to be bent-'to .conform to circuitous passages, without annealing. The surfaces are left smooth and highly polished, and re- 'quire no further iinishin g, and the friction and consequent evolutionof heat caused by the kswift passage ot' the carrier is reducedtoal minimum.y It produces a perfect shape and uniform diameter, whereby au equal and continuous bearing is maintained between the carrier and conductory, which prevents all leak` age of air, and, with a'given pressure, arcgular and uniform speed is imparted to the carrier, and, when the conductory is constructed in sections, a perfect register at the connecr` tions is -secure freely within the threaded chamber of the n'ut.
I do not, however, hereinolaim the specic construction of this coupling, although it pos= f sesses special 'advantages-br(this-purpose, as it maybe applied for other purposes, and,
therefore, I. have presented the same in an in-.. dependent application filed Juliet?, 1876, and
passed for issue September 14, 1876, in accordance with the requirements of the rules'of l practicer in such cases made' and provided.
Having thus fully described my invention in the manner in which I prefer to apply it, I donot, however, wish to be confined to the vexact process described in the construction of theconductory, as it is' obvious that a conductory may be produced from a lblank of s'heetn'etal bent to form,- sind its edges joined 2. A hollow eonduetory oonstrnoted of conf by brazing or' otherwise, Without departii'ig neoted sections composed ofmetal that has from the spirit'ofl my invention. been drawn o1" rolied in the direction of the WhatI claim, and desire to secure by Let- .length of Said conductory, in combination with ters Patent, is- 'a suitable carrier, for the purpose set forth- 1. rEhe combination of a. hollow oonductory composed of metal that hasy been `dratwmor rolled vin the dieetion of the length of said Witnesses: oonduotory, and a suitable carrier, for the pur- JAS. H.. REDFIELD,
, *WILLIAM H. BAILEY.
v l' poseet foxjth. x: l i GHAS. W. FORBES.