Machine for Sharpening and Gumming Saws. Page: 4 of 5
[2], 3 p. : ill. ; 23 cm.View a full description of this patent.
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564,077
away from the tooth upon which it is operat- tion of the bar 29 with the longitudinal beams
ing when it is required to bring another tooth of the machine the latter can be properly fit-
into position to be sharpened. ted to the different makes of saw-gins and the 70o
An eccentric 18 or equivalent device is lo- supporting-arms 32 can be properly posi-
5 cated upon the side of the bevel gear-wheel tioned by being turned and slid upon the bar
3, and the rear end of a pitman 19 is engaged 29, so as to obtain a proper bearing upon a
therewith, and its front end has connection convenient portion of the gin.
with the crank-arm 16, so as to impart a rock- When the machine is in operation, motion 75
ing movement to the shaft 16 when the ma- is imparted to the circular file-cutter and to
ro chine is performing efficient service. the feeder by rotating the shaft 1, which car-
The feeder comprises an arm formed of two ries the bevel gear-wheel 3, which imparts a
parts 20 and 21, which are adjustably con- corresponding movement to the shaft 7 and
nected together, each part having a series of the eccentric 18 in the manner set forth, and 80o
openings 22 formed longitudinally thereof which through the connection's herein de-
r5 for the reception of a pin or fastening 23, by scribed, operate the parts 9 and the feeder so
means of which the said parts are secured in as to attain the desired result in the manner
the adjusted position. The front end of the herein explained.
outer part 21 has its extremity 24 bent so as Various changes in the form, proportion, 85
to form a pendent portion 24 to engage with and minor details of construction maybe re-
20 the teeth of the gin-saw and move the latter sorted to without departing from the spirit
step by step, so as to bring each tooth suc- or sacrificing any of the advantages of this
cessively into position to be sharpened. The invention.
inner end of the feeder has adjustable con- What is claimed is- 90
nection with the crank-arm 16, whereby its 1. In a saw gumming and sharpening ma-
25 throw can be regulated to suit the size of the chine the combination of a shaft journaled
saw-teeth to be sharpened. A clip 25 is ad- in bearings and carrying the circularfile-cut-
justable along the length of the crank-arm ter, a beam provided with a vertically-mov-
16 and is held in the located position by means able bearing having the said shaft journaled 95
of a binding-screw 26, and the feeder or the therein, a guide secured to the beam, a spring
30 inner part 20 thereof has pivotal connection interposed between the guide and the mov-
therewith, so as to admit of the bent end 24 able bearing, and actuating mechanism for
riding over the inclined side of a saw-tooth imparting a reciprocating movement to the
during the forward stroke or movement of said movable bearing wherebyan oscillatory Too
the said feeder, movement is imparted to the aforesaid shaft
35 In planning and constructing the machine and its cutter advanced to and withdrawn
the parts are proportioned and disposed so from the work, substantially in the manner
that the feeder and the file-cutter make one set forth for the purpose described.
complete movement during each revolution 2. In a sawgummer and sharpener the com- 105
of the bevel gear-wheel 3, and so that when bination of a shaft mounted in bearings and
40 the feeder is moving rearwardly to bring a provided with a circular file-cutter, a beam
new tooth into position the file-cutter is lifted having a movable bearing forming a support
out of the way, and when the file-cutter is in for the said shaft, a spring obtaining a pur-
operation the feeder is gradually advancing chase upon the beam or a part thereof and Io
to a position so as to bring another tooth in exerting a pressure upon the said bearing, a
45 proper position to be sharpened after the file- rock-shaft having an arm in engagement with
cutter is again elevated or withdrawn from the said bearing, a feeder operatively con-
engagement with the tooth just operated nected with the said rock-shaft, and actuat-
upon, ing mechanism for operating the rock-shaft II5
The machine is adjustably supported at its to move the adjustable bearing in opposition
50 rear end upon legs 27, which latter have ad- to the pressure of the spring acting there-
justable connection with the frame in any against, and to reciprocate the feeder, sub-
convenient manner, preferably by means of stantially as set forth for the purpose de-
a clamp-bolt and nut 28, operating in a longi- scribed. 120
tudinal slot provided in the upper end por- 3. In a saw gummer and sharpener the com-
55 tions of each leg. A transverse shaft or bar bination with the framework carrying the
29 is placed in the eyes of vertically-disposed cutting devices of a rock-shaft having crank-
eyebolts 30, and the latter are adjustable in arms 16 and 17, a feeder having pivotal and
longitudinal slots 31, formed in the front ends adjustable connections with the crank-arm 125
of the longitudinal beams 2. Supporting- 16 and composed of parts which are adjust-
60 arms 32 are placed upon the bar or shaft 29 ably connected together, whereby the throw
and are held thereupon in the required ad- of the feeder can be regulated and the oper-
justed position by means of binding-screws ating end of the said feeder properly fitted to
33, and the front ends of the supporting-arms the saw, and a movable bearing for the shaft 13o
are curved upwardly and forwardly so as to carrying the cutter having connection with
65 clear the gin-saws 34 and obtain a purchase the crank-arm 17, substantially as set forth
npon a transverse portion 35 of the gin-frame- for the purpose described.
work. By reason of the adjustable connec- 4. In combination a longitudinally - dis'
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Hulme, William A. & Hulme, Thomas B. Machine for Sharpening and Gumming Saws., patent, July 14, 1896; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth174321/m1/4/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.