US1828170A

US1828170A - Adjustable anchoring fitting for thermometer bulbs

Info

Publication number: US1828170A
Application number: US442703A
Authority: US
Inventors: Carlton W Bristol
Original assignee: Bristol Co
Current assignee: Bristol Co
Priority date: 1930-04-08
Filing date: 1930-04-08
Publication date: 1931-10-20
Anticipated expiration: 1948-10-20

Description

Get. 2%, 1931. c. w. BRISTOL 1,828,170

ADJUSTABLE ANCHORING FITTING FOR THERMOMETER BULBS Filed April 8. 1930 INVENTOR tar/f0 h. Br/s/o/ ATTOR N EY Patented @ct. 250, 19 31 v STATES ATE T I j;

CARLTON W. BRISTOL, OF NAUGATUCK, CONNECTICUT, ASSIGNOR TO THE BRISTOL COM- PANY, OF WATERB'URY, CONNECTICUT, A. CORPORATION OF CONNECTICUT ADJUSTABLE ANCHORING -FITTING FOR THERMOMETER BULBS Application filed April 8,

The invention relates to a fitting for use with measuring apparatus, more particularly with the bulb or encased temperature responsive unit of a thermometric device which 5 is adapted for insertion in a fluid.

Thermometer bulbs of this nature are used to a large extent in controlling the temperatures of various baths or liquids, for example in the pasteurization of milk wherein 1t s especially necessary that sanitary precau-.

tions be observed in the use of such thermometer. i

It is the object of the invention to'afi'ord a fitting whereby the bulb portion may be adjusted to the desired length with respect to its stationary support; and to provide for this purpose, also, a fitting'of sanitary construction and which may readily be cleaned and avoids formation of crevices into which foreign matter might tend to accumulate.

In carrying out the invention, there is arranged to fit slidably over the usual casing or bulb of a thermometenvfor' example, of'

the expansible gas, vapor or liquid type, a fitting which is so constructed that by taking up on a jam nut, forming a part thereof,

the fitting as a whole may be tightened to the bulb at any desired position along its length.

The aforesaid locking means, furthermore, is arranged for threaded engagement with a finishing sleeve also slidable over the bulb; and the fitting as a whole is then to be secured by a suitable sanitary ferrule and cap to the desired support, whereby the distance the bulb projects into a container or the like is determined.

The nature of the invention, however, will best be understood when described in connection with the accompanying drawings, in which:

Fig. 1 is a vertical section showing the novel fitting located in a T. a

Fig. 2 is a fragmentary vertical section illustrating the manner of securing the novel fitting to a wall, such as of a tank or vat.

. Fig. 3 is an enlarged longitudinal section of the anchoring element and associated finishin sleeve.

Re erring to the drawings, 10 designates so the bulb or casing of a thermometric device 1930. Serial No. 442,703.

such as they usual and well-known type of gas, vapor or liquid-thermometer; and, as indicated in Fig.1, the same is designed to be fitted, for example, into a T'11,the bulb having an extension as the armored tubing or the like 12 at its outer end whereby an iiidication of the temperatureprevailing in the medium passing through the T may be had at some point remote therefrom, as is well understood.

As it is desirable, well as necessary 'in many instances, that'this bulb 10 be capable of projecting at difi'erent distances into a tank orfitting (as indicated by the dotted line position, Fig. 2) or is required-to be adaptable to fittings of difierent diameters and tanks of different sizes, said bul'b 10 should be adjustable relatively to the means for securing the same rigidly to such fitting 3 or tank.

In accordance with the present invention, this-is accomplished by means of atubular anchoring element 15 having a sliding fit over the bulb 10, said element being tapered and reduced in' 'thickness at its outer-end to" an extent to afford ayieldable edge 16. Said anchoring element, furthermore, is threaded between its ends-and at its innermost end is adapted to receive a holding wrench, for example, in theprovision of the diametrically disposed slots 17.

A jam nut- 18, moreover, is adapted for threaded engagement with the intermediate portion of the anchoring element 15, fitting over its outer end; and the inside surface of 55 said outer end of the jam nut is correspondingly tapered as at 19 to fit substantially the taper of said anchoring element. Thereby, as the jam nut is taken up by rotating it in a clockwise direction on the anchoring element and contact had between the two

tapered portions

16 and, 19, the yieldable edge ofthe anchoring element will be pressed firmly against the bulb to hold the said anchoring element thereto. To enable a sufficientforce to be ap 5 plied, jam nut 18 is, furthermore, provided with the diametrically opposite flats or grooves 20 for obtaining a wrench hold there on; and the same are of such a nature as to be readily cleaned.

matter cancollect. In this connection, also,

I it is desirable to havethe edge 16 of the anchoring element project slightly beyond its surrounding 3' am nut portion 19 so that no I'ecess or crevice ma be formed thereat; and the jam nut is bevele down substantially to said edge to afforda finished and readily clean- 1 choring unit embodying the anchorin ament, jamnut and finishing sleeveis 'tted within a cylindrical, smooth-surfaced ferrule when the nut is drawn up. I

' andis'adapted to support thereby the outer able surface.

. In order, however, to securethe bulb 1n position', for example in the T 11, the entire anelewhich is tapered internally at its outer end end of the unit, said ferrule being further provided with a shoulder 26. over whichfits a holding nut '27 in threaded engagement with the outer end of the inlet 28 to T 11.

winged follower .cap 29 which is designed to "contact with the corresponding end of the finishing sleeve 21 to force thesame tightly against the seat 30 of the ferrule.

' It has been founddesirable, also, in order to prevent any possible leakage of liquid into the holding unit to provide at its follower end about said bulbra suitable washer member 31 which may be of a soft metal, as lead. This washer is designed to fit a tapered seat '32 of the sleeve so that as pressure is exerted by the follower cap on said sleeve, end andwasher, the latter will tend to grip the surface of the bulb.

In Fig. 2 a slightly different manner of se- [curing the anchoring unit is indicated, the

same being shown. more particularly for use in connection with a wall 35, as of a tank or like container. In this particular embodiment, the ferrule 36 is provided with a flange 37 at its outermost end and-having the seat 38 for engagement with the tank end of the anchoring unit. In addition to being internally threaded at its follower end for accommodating a follower member 39, as in the previously described embodiment, it is externally threaded .as at 40 and over which is fitted a nut 41 with intermediate washer 42 tosecure the said ferrule tightly to the said vall, as by drawing up on said nut. I claim: 1. A. fitting for a thermometer bulb ofthe nature set forth, slidable longitudinally over said bulb and adapted to be anchored at any desired position along the length of the bulb, said fitting comprising a sleeve adapted to have a sliding fit over the bulb and being reduced and tapered at its outer end to an extent to afford a yieldable edge, said sleeve aisd .being'threaded betwe'enits ends, and a jam nut'fittlng over the ,outer'end ofsaid sleeve duced and tapered at its outer end to an extent to afford a yieldable edge, said sleeve also being threaded between its ends and. adapted at the inner end to receive a holding wrench, and a jam nut fitting over the outer end of said sleeve and engaging the threads thereof to press the yieldable edge against the bulb 3. A fitting for a thermometer bulb of the nature set forth, slidable longitudinally over said bulb and adapted to be anchored at any desired position alongthe length of the bulb,

said fitting comprising asleeve adapted to have a sliding fit over the bulb and being resaid fitting comprising a sleeve adapted to have a sliding fit over the bulb and being re- I I duced and tapered at its outer end-to anextent to afford a 'yieldable edge, said sleeve also beingthreaded between its ends, a jam nut fitting over the outer endof said sleeve and enga mg the threads thereof to press the yielda leedge against the bulb when the "nut is drawn up, said nut having a circumferential shoulder and being provided with external threads beyond said shoulder, and a finishing sleeve through which the bulb is adapted to pass and in threaded engagement with the said external threads of the jam nut and its inner edge adapted to abut the said shoulder thereof. a

A 4. A fitting nature set forth, slidable longitudinally over said bulb and adapted to be anchored'at any desired position along the length of the bulb, said fitting comprising a sleeve adapted to have a sliding fit over the bulb and being reduced and tapered at its outer end to an extent to afford a yieldable edge, said sleeve also being threaded between its ends, a jam nut fitting over the outer end of said sleeve and engaging the threads thereof to press the inner edge adapted to abut. the said shoulder thereof, a mounting ferrule adapted to support rigidly the anchoring means and bulb and having a head for engagement with the outer surface of the jam nut, and means adapted to secure the head to a support into which the ferrule is adapted to be passed.

for a thermometer'bulb of the r n me 5. A fitting for a thermometer bulb of the nature set forth, slidable longitudinally over said bulb and adapted to be anchored at any desired position along the length of the bulb, said fittlng comprising a sleeve adapted to have a sliding fit over the bulb and being reduced and tapered at its outer end to an extent to afi'ord a yieldable edge, said sleeve also being threaded between its ends, a jam nut fitting over the outer end of said sleeve and engaging the threads thereof to press the yieldable edge against the bulb when the nut is drawn up, said 'nut having a circumferential shoulder and being provided with external threads beyond said shoulder, a finishmg sleeve through whichthe bulb is adapted to pass and in threaded engagement with the said external threads of the jam nut and its inner edge adapted to abut the said shoulder thereof, a mounting ferrule adapted to support rigidly the anchoring means and bulb and having a head for engagement with the outer surface of the jam nut, means adapted to secure the head to a support into which the ferrule is adapted to be passed and a follower cap for sealing the inner end of the finishing sleeve and adapted for threaded engagement with the ferrule to jam said sleeve therein.

6. A fitting for a thermometer bulb of the nature set forth, slidable longitudinally over said bulb and adapted. to be anchoredat any desired position along the length of the bulb, said fittlng comprising a sleeve adapted to have a sliding fit over the'bulb and being reduced and tapered at its outer end to an extent to afford a yieldable edge, said sleeve also being threadedbetween its ends, a jam nut fitting over the outer end of said sleeve and engaging the threads thereof to press the yieldable edge against the bulb when the nut is drawn up, said nut having a circumferential shoulder and being provided with external threads beyond said shoulder, a finishing sleeve through which the bulb is adapted to pass and in threaded engagement with the said external threads of the jam nut and its inner edge adapted to abut the said shoulder thereof, a mounting ferrule adapted to support rigidly the anchoring means and bulb and having a head for engagement with the outer surface of the jam nut, means adapted to secure the head to a support into which the ferrule is adapted to be passed, a follower cap for sealing the inner. end of the finishing sleeve and adapted for threaded engagement with the ferrule to jam said sleeve therein, and an insert washer of relatively soft metal in the top of the finishing sleeve adapted to sphead under the pressure of the follower cap for peripheral and sealing engagement with the bulb.

In testimony whereof I afiix my si ature.

' CARLTON W. BRI TOL.