AN IMPROVED POCKET APPARATUS FOR REGISTERING THE NUMBER OF REVOLUTIONS PERFORMED BY SHAFTS OF TRANSMISSION, PRIME MOVERS, OR AXLES
Year: 1877

page_text: LETTERS PATENT to Aman Sainte, of Boulevard Saint Denis, i, at Paris,
Engineer, for the Invention of "AN IMPROVED POCKET APPARATUS FOR
REGISTERING THE NUMBER OF REVOLUTIONS PERFORMED BY SHAFTS OF
TRANSMISSION, PRIME MOVERS, OR AXLES."
Sealed the 24th April 1878, and dated the 24th October 1877.
PROVISIONAL SPECIFICATION left by the said Aman Sainte at the Office
of the Commissioners of Patents on the 24th October 1877.
AMAN SAINTE, of Boulevard Saint Denis, No. 1, at Paris, Engineer. "AN IMPROVED
POCKET APPARATUS FOR REGISTERING THE NUMBER OF REVOLUTIONS PERFORMED
BY SHAFTS OF TRANSMISSION, PRIME MOVERS, OR AXLES."
My Invention has for its object an improved apparatus for computing the number
of revolutions performed by shafts of transmission, prime movers, or axles of any
description when undergoing a movement of rotation, such apparatus being of very
reduced dimensions, and thereby rendered very portable, and capable of being
carried in the pocket of the user. It consists of a stirrup-shaped piece or bracket,
composed of top and bottom horizontal bars or pieces connected by an upright bar
or piece, and the whole stepped or secured in a wooden handle. Through the top
and bottom bars or pieces near their ends passes a vertical axis or spindle, formed
at its middle portion between the said top and bottom bars with an endless screw
or worm, which engages with a toothed wheel (No. 1) mounted on a pivot or axis
fixed to a small plate attached to and adjustable on the upright bar or piece of the
stirrup bracket, for the purpose of taking the toothed wheel and endless screw apart.
when desired. By means of a spring secured near the handle of the instrument the
said adjustable plate is acted upon so as to normally retain the toothed wheel No. 1
in gear with the endless screw or worm.
On the pivot or axis of the toothed wheel No. 1 is a small toothed pinion, which
engages with another toothed wheel No. 2 pivoted at the upper end of a short
upright arm secured to the bottom bar or piece of the stirrup bracket.

page_text: The toothed wheels Nos. 1 and 2 are marked on their faces so as to indicate
respectively units and tens, or tens and hundreds, as the case may be. The reading
of these divisions is ensured by means of two small index fingers or points secured
to and pendant from the top bar or piece of the stirrup bracket immediately over
the highest points of the toothed wheels Nos. 1 and 2 respectively.
On the end of the axis or spindle, passing through the stirrup bracket, is a thimble
or cap terminating in a triangular point. By means of small pins on the end of the
axis or spindle, taking into slots at the sides of the thimble or cap, the latter is
caused to rotate with the axis or spindle, as herein-after described.
The action of my pocket counting apparatus is very simple. If, for example, it is
required to compute the number of revolutions performed by a shaft or axle, the
triangular point on the end of the thimble or cap is inserted into the centre hole at
the end of the said, shaft, which by its movement causes the thimble or cap, and
with it the upright axis or spindle of "the instrument. to rotate, and the endless
screw or worm acting upon the toothed wheels Nos. 1 and 2 causes them to rotate,
and their graduated faces passing the index fingers or points before mentioned the
number of revolutions performed in a given time by the revolving shaft are thereby
marked or registered.
In lieu of a triangular point the thimble or cap may terminate in a conical
depression or cup in cases where the instrument is applied to a shaft or axle ter-
minating in a point; or when the shaft is accessable only from its side the thimble
or cap is provided at its extremity with a drum or rigger, the edge of which is placed
in contact with the shaft.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Aman Sainte in the Great Seal Patent Office on the 24th April
1878.
..
蕈
"AN IMPROVED
AMAN SAINTE, of Boulevard Saint Denis, 1, at Paris, Engineer.
POCKET APPARATUS FOR REGISTERING THE NUMBER OF REVOLUTIONS PERFORMED
BY SHAFTS OF TRANSMISSION, PRIME MOVERS, OR AXLES."
My Invention has for its object an improved apparatus for computing the number
of revolutions performed by shafts of transmission, prime movers, or axles of any
description undergoing a movement of rotation, such apparatus being of very reduced
dimensions, and thereby rendered very portable, and capable of being carried in the
pocket of the user.
On the accompanying Drawing Figure 1 is a front view, and Figure 2 a back
view of my improved apparatus, like letters of reference indicating corresponding
parts in both Figures. It consists of a stirrup-sliaped piece or bracket a, composed
of top and bottom horizontal bars or pieces 1, 2, connected by an upright bar or
piece 3, and the whole mounted or stepped in a wooden handle b. Through the
top and bottom bars or pieces 1 and 2, near their outer ends, passes a vertical axis
or spindle c, formed at its middle portion between the said bars with an endless
screw or worm d, which engages with a toothed wheel mounted on a pivot or
axis carried by a small plate which is attached to and adjustable on the bar or
piece 3, for the purpose of taking the toothed wheel fout of gear from the endless
screw d when desired. By means of the spring u, secured near the handle b, the
said adjustable plate is acted upon so as normally to retain the toothed wheelf in
gear with the endless screw d.
On the pivot or axis g of the toothed wheel is a small toothed pinion h, which
engages with another toothed wheel i pivoted at the upper end of a short upright
arm j, secured to the bottom bar or piece 2 of the stirrup bracket a.
The toothed wheels fand i are marked on their faces so as to indicate respec-
tively units and tens, or tens and hundreds, as the case may be. The reading of
these divisions is facilitated by means of two small indices or fingers k and l, fixed
on the upper bar or piece 1, as shewn, and pendant therefrom immediately over the
highest points of the toothed wheels fand i.
On the upper end of the axis or spindle c is a thimble or cap p (Fig. 1), ter-
minating in a triangular point, and by means of small pins o, o, on the end of the
axis or spindle c taking into slots q in the lower edges or sides of the thimble or
cap p, the latter is caused to rotate with the axis or spindle c; or in lieu of a
triangular point the thimble or cap p¹ (see Fig. 2) may terminate in a conical
depression or cup in cases where the instrument is applied to a shaft or axle ter-
minating in a point.
The action of this pocket counting apparatus is very simple. If, for example,
it is required to compute the number of revolutions performed by a shaft or axle,
the triangular point at the end of the thimble or cap p is inserted into the centre
hole at the end of the said shaft, which by its movement causes the thimble or cap p,
and with it the upright axis or spindle c of the instrument to rotate, and the screw
or worm & acting upon the toothed wheel f, and this again through the pinion h
upon the toothed wheel i causes them to rotate, and their graduated faces passing
the indices or fingers k and the number of revolutions performed by the revolving
shaft in a given time are thereby marked or registered.
Fig. 3 shews a plumb line and weight formed with a point for determining and
marking the centre of a revolving shaft in cases where such centre mark in
absent.
When a shaft is accessible only from its circumference the thimble or cap is provided.
with a drum or rigger u (see Figure 4), the edge of which is placed in contact with
the revolving shaft.

page_text: The apparatus above described may be packed in an oval, rectangular, or any
other shaped sheath or case suitable for carrying in the pocket.
Having now described and particularly ascertained the nature of my said Inven-
tion, and the manner in which the same is or may be used or carried into effect,
I would observe in conclusion that what I clain as my Invention is, the construc-
tion and use of a portable meter or counting apparatus, substantially as and for the
purpose herein-before described, and illustrated by the accompanying Drawing.
In witness whereof, I, the said Aman Sainte, have hereunto set my hand and
seal, this Eighteenth day of April, in the year of our Lord One thousand eight
hundred and seventy-eight.
Witness;
ALBERT CAHEN,
Civil Engineer,
Of Boulevard Saint Denis, 1,
at Paris.
A. SAINTE: (L.S.)