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Publication numberUS237987 A
Publication typeGrant
Publication dateFeb 22, 1881
Filing dateNov 10, 1880
Publication numberUS 237987 A, US 237987A, US-A-237987, US237987 A, US237987A
InventorsWilliam S. Mcmams
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Apparatus for testing pipes and tubes
US 237987 A
Abstract  available in
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Description  (OCR text may contain errors)

m5 Model.)


r Apparatus for Testing Pipes and Tubes. Nor 237,987." Patented Feb. 22-,|ss|.

Wz'Z-weoaedi Inventor:

'tudinal section thereof in line as m, Fig. 4. Fig.

the right-hand of Fig. 1.



SPECIFICATION formingpart of Letters Patent No. 237,987, dated February'22, 1881. Application filed November 10, 1880. (No model.)

To all whom it mag concern: v

Be it known that 1, WILLIAM S. McMANUs, a citizen of the U nited States, residing at South Chester, in the county of Delaware and State of Pennsylvania, have invented a new and useful Improvement in Mechanism for Testing Pipes and Tubes, which improvement is fully set forth in the following specification and accompanying drawings, in which- Figure l is a side elevation of the testing mechanism embodying my invention. Figs. 2 and 3 are end views thereof. Fig. 4 is an end view enlarged. Fig. 5 is acentral longi- 6 is a vertical section of the portion shown at Similar letters of reference indicate correspondin g parts in the several figures.

My invention consists in providing the pipes through which the testing-fluid flows with packing, which is expanded by suitable means, and adapted to form tightjoints between said pipes and the pipe or tube to be tested.

Referring to the drawings, A represents a trough or bed with longitudinally-extending tracks a a on its sides or bottom.

B represents a water or other fluid receiving pipe, one end of which is connected to a plug, 0, whose exterior is threaded for en gagement with an internally-threaded hand ring or wheel, D.

p E represents a sleeve, which loosely encircles the pipe 13, and is provided at one end with a collar, F, to which the ring or wheel D is attached by means of screws'F, which, passing through the sleeve, have their points project freely into a circumferential groove, 1), of the ring or wheel, whereby, when the ring or wheel 1) is rotated and receives longitudinal motions, the collar F and sleeve E are adapted to follow said motions without rotation.

On the outer surface of the pipe B, at the end opposite to the collar F, is fitted a head, G, which is held in, position by a nut, G, or other means, and also fitted on said pipe, adjacent to the head G, is an annulus or packing, H, of soft rubber or other elastic or expansible material, it being noticed that the packing is interposed between the head G and end of the sleeve E, said end acting as a follower, as at H. Washers J embrace the sides of the packing, and are in contact with the head and sleeve G E, as more plainly shown in Fig. 5.

The mechanism thus described is duplicated and applied, one to each end of the trough or bed A, each end likewise having a perforated head, as at K K,- the head K communieating with a supply of water or other fluid under pressure, and being fixed to the trough or bed A, and the other head, K, made movable on said trough or bed,.it being noticed that the flanged end of each plug 0 is securely connected to one of the heads K K, and the sleeves E are supported on wheels or rollers L, and the head K is supported on wheels or rollers L. I

Attached to the sides of the head K are outwardly-exten ding pawls M, which are adapted to engage with ratchet or toothed bars N on the trough or bed A, and connected to the outer end of said head K and communicating with the perforation or bore thereof is a faucet, N.

The operation is as follows: The pawls M are raised, and the head K and adjacent sleeve E, with connected parts, are moved, in the present case, to the right. The pipe or tube, d, to be tested is now applied so as to receive at one end the packing of the left-hand sleeve E. Then the right-hand sleeve E and head K are moved inwardly, so that the packing thereof enters the right hand end of the tube, the cook or faucet N being closed, and the pawls M engaging with the ratchet N, so as to prevent movement or forcing of the sleeve E and connected parts to the right. The rings or wheels D are now rotated, the effect of which is to move the sleeves E toward the packiu gs H, and as said packings are restrained by the heads G, the packings are expanded and so pressed against the inner face of the tube to be tested as to form water or fluid joints between the pipes B and said pipe or tube. The fluid is now admitted at the head K, and passes through the pipe B and fills the pipe or tube (1 and the other pipe, B, and escapes through the faucet N, after which the latter is closed. Should the tube be incapable of standing the pressure, it will burst, or, should it be imperfect and pierced, the fluidwill escape at the existing perforations; otherwise the tube is in good and proper condition. The supply of fluid is then shut off and the cook 1. In apparatus for testing pipes and tubes, theinlet and outlet pipes for the testing-fluid, provided with expansible packings, substantially as and for the purpose set forth.

2. The inlet and outlet pipes with expansible packings, in combination with the stops and followers, and suitable means for operating the followers, substantially as and for the purpose set forth.




Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5481902 *Jan 28, 1994Jan 9, 1996Lanasa; DouglasPipe testing system
Cooperative ClassificationG01M3/2846