An Improved Guide-holder for Stamp-mills.
Year: 1893

page_text: Date of Application, 28th Mar., 1893
Complete Specification Left, 28th Dec., 1893-Accepted, 10th Feb., 1894
PROVISIONAL SPECIFICATION.
An Improved Guide-holder for Stamp-mills.
1, PETER CURRIE ROBERTSON, of Phillipsburg, Montana, U.S.A., Inventor,
do hereby declare the nature of this invention to be as follows:-
This my invention has reference to an improved guide-holder for stamp-mills;
and the object of the invention is to provide a guide in which the slackness
occasioned by wear can be readily taken up.
By this my invention I secure to the framework of the stamping machine, two or
four studs which project outwardly. The inside edges of the studs are cut out in
the form of a "V." The guides proper consist of two rectangular blocks each
having a semi-circular groove which, when the two blocks are brought together,
make a circular aperture between them. The guide-blocks have a groove at each
side and in said grooves a wedge-shaped key is fitted. The key on each side fits
the "V" in each stud. A face-plate passes over the studs and rests against
the keys.
It will be understood the when the face-plate is pressed forcibly down upon the
keys, the said keys in being moved horizontally with regard to the studs, the shape
of the wedge-shaped keys which engage the "V" depressions in the studs, will
cause the blocks to be pressed together.
Dated this 28th day of March 1893.
W. H. MUNNs,
Agent for Applicant.
COMPLETE SPECIFICATION.
An Improved Guide-holder for Stamp-mills.
I PETER CURRIE ROBERTSON of Phillipsburg, Dear Lodge County, Montana,
U.S.A. Inventor 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 :-
ore.
My invention relates to improvements in guides and holders such as are used to
guide the vertically reciprocating stamps of a stamp mill which is used for crushing
These guides or boxes are secured to the rails or other convenient portions of
the frame of the battery of stamps, and they serve to guide the stamps so that they
will work properly.
The object of my invention is to construct a guide and holder so that a series of
the guides and holders may be conveniently applied to a series of stamps, which
will hold the same so that they will reciprocate easily and without excessive friction,
which are arranged so that any guide and its holder may be easily removed when
necessary, and which may be tightened so as to force the back portion of the guides
or boxes together with the saine pressure as the front portion of said parts.
The last item mentioned is of special importance, as when the ordinary guide
holders are tightened, they force the boxes or guides together in front, but permit
them to gap behind, and consequently the wear on both guide and stamp is great.
To these ends, my invention consists in certain features of construction and
combination of parts, which will be hereinafter described and claimed.

page_text: Reference is to be had to the accompanying drawings forming a part of this
Specification, in which similar figures of reference indicate corresponding parts in
all the views.
Fig. 1 is a front elevation, showing in a general way the battery of stamps;
Fig. 2 is an enlarged detail front elevation of one of the guides and its holder;
Fig. 3 is a side elevation partly in section, of the same; and
Fig. 4 is a broken sectional plan of the guide and holder.
The stamps 10 are of the usual kind, and are held to reciprocate vertically in a
suitable frame 11 above a bed 12. Each stamp is held to slide in a guide 13,
which comprises two boxes 14, having a central bore to fit the stamp as shown in
Fig. 4 and these guides or boxes are carried by the rails 15 of the main frame 11.
Each box 14 has on its outer side a horizontal groove 16, as best shown in Fig. 4,
which groove is inclined inward near the front of the box, as shown at 16" in the
same figure, the object of this inclination being to enable the boxes to be crowded
together as hereinafter described.
These grooves 16 in the boxes 14, receive the keys 17 of a clamp which serves to
lock the guide to the rail 15. The keys 17 have wedge-shaped front ends 18,
which fit against the inclined walls 16 of the groove 16, and these front ends of
the keys are pivoted to lugs 19" on the back side of a face plate 19, which extends
across in front of the guide.
On the outer portion of the keys 17, and near their rear ends, are produced
wedges or cams 20, the faces of which are horizontally and longitudinally grooved,
as shown at 21, and the grooves receive corresponding but oppositely inclined
wedges 22, which are produced on the clamping bolts 23. These bolts extend'
parallel with the keys 17, and they are pivotally connected with the rail 15, of the
machine by keepers 24 and 25. The keeper 24 comprises a plate 26, and forwardly-
projecting horizontal lugs 27 between which one of the bolts 23 is pivoted, the bolt
being held in place by a pin 28, which extends downward through the lugs 27
and through the end of the bolt. The plate 26 is fastened to the rail 15 by suitable
bolts 26ª.
The keeper 25 comprises a plate 29, which is secured to the rail by bolts 29ª,
and lugs 30 produced near the top and bottom of the plate, and a central heavier
lug 31, arranged between the lugs 30.
The inner end of one of the bolts is arranged between one of the lugs 30 and the
lug 31 and held in place by a pin 32 extending through the lugs and bolt, as
shewn in Figs. 3 and 4.
In a battery there are usually five stamps as shown in Fig. 1 although any
number may be used, and the arrangement of the keepers just described is to enable
the inside keeper 25 to serve the purpose of supporting two of the bolts 23. In
carrying out this arrangement the keepers 24 are arranged on the outer sides of the
series of guides, and all the other keepers will be like the keeper 25. This will
make it unnecessary to use two keepers between a pair of guides, as the bolt 23 of
one guide may be pivoted between the upper lug 30 and the lug 31 while the other
guide bolt may be pivoted between the lug 31 and the lower lug 30.
The outer ends of the bolts 23 are screw-threaded, as shown at 33 and project
through holes in the ends of the face plate 19; the bolts are fastened to the face
plate by nuts 34 and check nuts 36. The nuts 34 have shanks 35 which project
through the holes in the face plate 19 and between the face plate and the thread of
the bolts. This arrangement saves the bolts, as if the thread came in direct
contact with the face plate, the jar of the battery would soon wear it away.
In attaching the guides and holders, the bolts 23 are secured to the rails 15, the
boxes 14 are adjusted around the stamps, the keys 17 are pushed into the grooves
of the boxes and the face plates 19 attached to the bolts 23.
The nuts 34 aud 36 are then tightened and the guides are thus securely locked
in place. When the nuts on the bolts are tightened it causes the face plate 19 and
keys 17 to be pushed backward and the wedges 18 acting on the inclined wall 16ª
crowd the front portions of the boxes together, and at the same time the wedges 20

page_text: come in contact with the wedges 22, and the back portions of the boxes are forced
together with the same power, and consequently the guides bear evenly upon the
stamps and will last a long time.
By having the keys held in grooves in the guides, and the bolts made to enter
grooves in the keys, the guides are held in place vertically, as were it not for this
or an equivalent arrangement, the friction of the stamps would displace them.
After the guides and holders are once in place, any holder and guide may be
conveniently removed by pulling out the necessary number of the pivot pins 28
and 32. It will be noticed that as the clamping bolts 23 are pivoted to the rails 15,
the guides will have a very slight side movement which will prevent the stamps
and guides from being unduly strained.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
The hereiubefore described improvements connected with stamp mills all
substantially as and for the purposes herein before set forth and illustrated in the
drawing hereunto annexed.
Dated this Twenty-eighth day of December 1893.
W. H. MUNNS,
Agent for Applicant.