Improved Means for Converting Oscillatory into Reciprocating Motion.
Year: 1892

page_text: Date of Application, 9th Aug., 1892-Accepted, 10th Sept., 1892
COMPLEIE DIVIFICATION.
Improved Means for Converting Oscillatory into Reciprocating
Motion.
A communication from abroad by THOMAS A. BRIGGS, of Arlington, in the State
of Massachusetts, United States of America, Machinist.
I JOHN MAGRATH KELLY of 1 Charlotte Street Bedford Square in the County
of Middlesex Merchant do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :-
This invention relates to mechanism for converting oscillatory motion into recipro-
cating motion and is employed in the paper-feeding machine for which I have
filed an application for Letters Patent of even date herewith, but the present
invention is not limited to such use as it is obvious that it is also adapted to be
applied to other machines.
The invention consists essentially in the combination of a stationary segmental
gear, a rock-arm pivotted to the centre of said gear, a shaft journaled on said rock
arm lengthwise thereof, pinions on opposite ends of said shaft, one of which pinions
engages the aforesaid gear, a shaft journaled transversely to the free end of the
rock arm, a pinion fixed to one end of the transverse shaft and engaging the outer
pinion of the longitudinal shaft, and an arm fixed to the opposite end of the trans-
verse shaft, all as hereinafter more fully described and specifically set forth in the
claims.
In the annexed drawing,
Figure 1 is a side view of the invention shewn in two of its operative positions.
Fig. 2 is a rear face view of the rock-arm and mechanism connected thereto.
Fig. 3 is a longitudinal section on line X, X, in Fig. 2.
Fig. 4 is a face view of the stationary gear.
Figs. 5 and 6 are transverse sections respectively on lines Y, Y, and Z, Z, in
Fig. 2.
Figs. 7 and 8 are respectively plan and front views of the cap which is detach-
ably connected to the free end of the rock-arm.
Fig. 9 is a detail view of the transverse shaft.
Fig. 10 is a top plan view of the pivotal connection of the pitman with the arm
which transmits motion from the rock arm to the pitman, and
Fig. 11 is a transverse section on line O, O; in Fig. 10.'
Similar letters of reference indicate corresponding parts.
A represents a stationary beveled segmental gear which is bolted or otherwise
rigidly secured to the frame F of the paper-feeding machine or other machine
requiring the conversion of oscillatory motion into reciprocating motion.
To the axial centre of said gear is pivoted the rock-arm C which receives oscil-
latory motion by a reciprocating rod R connected to one end of said arm as illus-
trated in Fig. 1 of the drawing, or by any other suitable means depending on the
character of the machine to which the invention is applied.
Lengthwise of said rock arm extends a shaft a which is journaled in suitable
bearings ff on the rock arm. To the end of the shaft a adjacent to the gear A is
affixed a bevel pinion b which engages said gear as shewn in Fig. 3 of the drawing.
To the opposite end of the shaft a is firmly secured a miter pinion c which meshes
with a corresponding miter pinion e affixed to a shaft d journalled to the free end of
the rock-arm at right angles to the shaft a.
For connecting the shaft d to the rock arm C it is preferred to employ a cap C¹
extended across the free end of said rock-arm and fastened thereto by tap-bolts h h.
Said cap is formed with the transverse journal bearing d' through which the shaft d
TD 071

page_text: passes. The pinion e is fixed to one end of the shaft d, and an arm D is firmly
secured to the opposite end of said shaft, preferably by means of a rectangular
tongue on the shaft entering a longitudinal slots in the end of the arm D, said
slot being of sufficient length to allow the said arm to be shifted longitudinally on
the tongue t and thus adjusted to extend a greater or less distance from the rock
arm C and increase or diminish the length of its stroke. A screw threaded stud t
projects from the tongue t and a nut i on said stud clamps the arm D in its required
position on the end of the shaft d.
B represents a slide which is mounted on a guide 1 attached to the frame F.
When the invention is applied to an automatic paper feeding machine attached to
a printing machine as described in the application for Letters Patent before referred
to the said slide carries one end of a transverse shaft which is provided with
grippers and draws thereby the paper over the feed table to the printing machine.
This slide is connected to the free end of the arm D by means of the pitman P
and in order to allow this pitman to accommodate itself to different angles in rela-
tion to the arm D and slide B, said parts are pivotally connected and to allow the
pitman to be adjusted in length between its connections with the arm D and slide B
the end portion of the pitman is screw threaded and a sleeve is placed therein
which is smooth internally and held in position by nuts n n on the pitman at oppo-
site ends of the sleeve. From the side of said sleeve projects a stud which passes
through an eye in the arm D and is screw threaded on its end and provided with a
nut by which the arm D is retained on the stud.
During the oscillations of the rock-arm C, the engagement of the pinion 6 with
the stationary gear A causes the shaft a to be rotated alternately in opposite
directions, the rotation being reversed with the reversing of the motion of the
rock-arm.
The engagement of the pinion c on the opposite end of the shaft a with the
pinion e imparts a rocking motion to the shaft d to which the latter pinion is
fastened, and the rocking motion of said shaft imparts an oscillatory motion to the
arm D which is thus caused to positively swing with its free end in the direction in
which the rock-arm moves and in advance of said rock-arm, as illustrated in Fig. 1
of the drawing. In this manner the length of the stroke of the pitman P and
slide B is greatly increased in comparison with the stroke of the rock-arm C.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, as communicated to me
by my foreign correspondent, I declare that what I claim is :-
1. The combination of the stationary segmental gear A, the rock-arm C pivoted
to the centre of said gear, the shaft a extending lengthwise of said arm and
journaled thereon, the pinion 6 fixed to one end of said shaft and engaging the
gear A, the miter pinion c on the opposite end of said shaft, the shaft & journaled
to the free end of the rock-arm at right angles to the shaft a, the pinion e fixed to
the shaft d and meshing with the pinion c and the arm D also fixed to the latter
shaft to move therewith as set forth.
2. In combination with the stationary gear A, the rock-arm C pivoted to the
centre of said gear, the shaft a extending lengthwise of said rock-arm and journaled
thereon, the pinion 6 fixed to one end of said shaft and engaging the gear A the
miter pinion c fixed to the opposite end of said shaft, the cap Cattached to the
free end of the rock-arm and provided with the journal bearing d' at right angles to
the shaft a, the shaft d extending through said journal bearing, the pinion e fixed
to one end of the latter shaft and meshing with the pinion c and the arm D fixed to
the opposite end of the shaft d, substantially as described and shewn.
3. In combination with the guide I and slide B mounted thereon, the stationary
gear A, the rock-arm C pivoted to the centre of said gear, the shaft a journaled on
said arm lengthwise thereof, the pinion 6 fixed to said shaft and engaging the
gear A, the pinion c fixed to the opposite end of said shaft, the shaft a journaled
to the free end of the rock-arm at right angles to the shaft a, the pinion e fixed to

page_text: one end of shaft d and meshing with the pinion c, the arm D fixed to the opposite
end of the shaft d, and the pitman P pivotally connected to the free end of the
arm D and to the slide B substantially as described and shewn.
4. In combination with the rock-arm C, longitudinal shaft a, transverse shaft d
and pinions, transmitting motion from the former to the latter shaft, the rectangular
tongue t on the end of the transverse shaft and provided with the screw-threaded
stud t, the arm D provided with the longitudinal slot s, and the nut i clamping the
arm D onto the transverse shaft as set forth.
5. The combination of the pitman provided with screw-threads, the sleeve / made
smooth internally and provided with the stud on its side, nuts n n on the pitman at
opposite ends of the sleeve, and the arm D connected to said stud as set forth.
Dated this 9th day of August 1892.
PHILIP M. JUSTICE, Fel. Chart. Inst. P.A.,
55 & 56, Chancery Lane, London, Agent for the Applicant.