JONES PRESSURE INDICATING AND RECORDING GUAGES.
The Jones Gauge Company, of Boston, Mass., successors to S. P. Jones,of the same city, ranks among one of the most goahead concerns in the United States. They own no less than eighteen patents on recording gauges, and have not been sparing of either efforts or expense to produce instruments whose excellence shall be the highest possible in every respect—as nearly perfect as possible and of undeniable practicability.
Among their many inventions is the Peerless indicating and recording gauge, using the Bourbon spring as the actuating power. When Mr. F. A. Jones invented this instrument, there was hardly anything in use in that line except diaphragm gauges. Mr. Jones was the first to adept the Bourbon spring in his recording instruments, for which he now holds the patents. The practical use of this spring is covered by these patents, and the company will take legal proceedings against those who infringe on such patents. It may be added that the Peerless indicating and recording gauge is now thoroughly well known on this continent and is in use in hundreds of water works plants—in fact by nearly all the leading water works. It was first put upon the market by S. P. Jones in 1884.
The use of these gauges guatds against the great error which pertains to all recording instruments now in use—viz .that the recording chart is not fixed and positive in its movement. From being attached to the dial wheels of the clock movement, it is susceptible to movement to and fro, loss-motion or backlash, as it is called, which causes error in time and absolutely prevents a correct reading of the chart. To remedy this error a new clock movement different from anything now made was invented,in which the motion is positive and the recording chart is rigidiy and immovably fixed upon some arbor of the train movement, which moves with precision and which sustains the motive lorcc of the clock. This movement, hitherto unknown, together with a sensitive and practical recording gauge has been invented and given to the world by F. A Jones at a very large cost to the company—an outlay, however, which was carefully made in the interests of science. The invention is altogether in accordance with the progressive spirit of the nineteenth century.
This patent positive clock movement runs for more than a week with one winding—the winder being key or stem. It can be removed from the gauge to admit of the latter being cleaned or repaired, without even letting off the pressure from the gauge, whereby it need not be disconnected, nor need the gauge mechanism be deranged (so as to require adjustment afterwards), nor is there any necessity for shipping the gauge to the manufacturer for repairs. The dial wheels are also entirely discarded, and the paper charts or dials are immovably fixed upon the arbor, by means of which variation and the back-lash or loss-motion already referred to are avoided and a correct reading secured. This is a most valuable feature—one which is in itself distinctive. The finishing of the movement is of the finest description. It is jeweled in seven holes, with straight line lever escapement, and chronometer balance.
Another invention patented by this firm is the Standard recording gauge, which was specially designed to embody the patent Simplex construction. Its cover is nickel-plated, and in form it gives the largest possible recording dial in the smallest case. The patent Simplex construction affords simplicity of parts and positive accuracy ol movement. It avoids all loss-motion in the connecting parts of the gauge, and insures positive action and thereby absolute accuracy of record. In its action the Standard is the most positive of any gauge, whether pre«sure or recording.
The Peerless indicating and recording gauge, which is claimed bv its inventors to be the standard recording gauge of the world, is double. One side indicates the pressure as in an ordinary pressure gauge, and the other records that pressure. In outside diameter each cover is about eight inches. This gives both a full-size indicating dial and a full-»ize recording dial. Both faces are connected with a gold eagle, and, as the two covers and the hasp are nickel-plated, th; effect is highly ornamental The gauge locks with a Yale lock, and, therefore, cannot be tampered with; it is mounted on a moulded cherry board, and supplied with an extra heavy nickel-plated cock. Every gauge h rs the Jones patent positive action stem winding clock movement already described, and is wound by a button on the outside of the case—thus rendering it unnecessary to unlock the gauge in order to wind it. One year’s supply of paper record charts or dials, with ink and filler, are included with the gauge, every one of which is fitted with the Jones patent fountain pen. This pen is claimed as far superior to any ink-recording attachment used in any kind of recording instrument. By its use the gauge becomes almost absolutely as sensitive as the pointer of an ordinary pressure gauge. This pen is adjustable,so that the record may be made in large or fine line,as may be desired. It is indestructible in itself, and will mark for more than one month with one filling of ink. Tne Jones Company has likewise produced a cheaper recording gauge than the above. The illustration shows one in an eight and one-half-inch circular case, which may be (usually is) shallow, but is also to be obtained in a deep case, if specially ordered, so as to insure uniformity with other gauges on a gauge board, or separately. It has a nickel-plated rim, and is handsome in appearance. It records the pressure on a paper chart,as shown in the illustration, and is fitted with a key-winding chronometer balance movement running over two days. This movement also is jeweled in seven holes,and has a lever escapement and expansion balance of fine workmanship, and, likq, the more expensive gauge, is fully guaranteed.
The illustrations accompanying this article show the Jones patent positive action clock movement, the Standard recording gauge, embodying the patent Simplex construction. the eight and one-halt-inch circular case recording gauge; indicating and recordin’ gauge in a deep case; the Jones patent adjustable, inde tructible fountain pen; the Peerless pressure indicating and recording gauge.