US1238370A - Scale. - Google Patents

Description

L. C. WETZEL.

SCALE.

APPLICATION FILED SEPT. 13, I913.

Patented Aug. 28, 1917.

UNITED STATES PATENT OFFICE.

LEWIS CALVIN WETZEL, OF TOLEDO, OHIO, ASSIGNOE TO TOLEDO SCALE COMPANY, OF NEWARK, NEW JERSEY, A CORPORATION OF NEW JERSEY.

SCALE.

Specification of Letters Patent.

Patented A11 28, 1917.

Application filed September 13, 1913. Serial No. 789,619.

To all whom it may concern:

Be it known that I, Lewis G. VETZEL, a citizen of the United States, residing at Toledo, in the county of Lucas and State of Ohio, have invented certain new and useful Improvements in Scales of which the fol lowing is a specification.

The scale which forms the subject matter of this application has been designed with special reference to parcels post work where it is desirable to have a scale of considerable range and yet of sufficient ac curacy to weigh lighter articles correctly, but obviously the scale is of advantage in other situations where like conditions prevail. In the accompanying drawings I have illustrated a preferred form of the invention and in the following description have described the same but it will be understood that the detailed disclosure is for the purpose of exemplification only the scope of the invention being defined in the following claims in which I have endeavored to distinguish it from the prior art so far as known to me without however relinquishing or abandoning any portion thereof.

Referring to the accompanying drawings Figure 1 is a side elevation of the scale partly broken away to show the interior construction; Fig. 2 is a partial transverse section upon a vertical plane through the line 2 of Fig. 1 and Fig. 3 is a horizontal section through the line 3 of Fig. 1.

The base 4 of my scale may be of any usual or approved type but in the present instance I have shown it as slightly raised from the support and provided with feet 5 which are perforated as shown in Fig. 1 for the purpose of attachment of the scale to a counter or other similar support when desired. The base is further provided with a hand-operated adjusting screw 6 which at its lower end is supported by a foot 7, the screw being threaded through the base as shown and the lower end resting loosely in the cup or foot 7 It will be understood that when the adjusting screw 6 is to be used no screws are to be placed in the corresponding end of the base. Upon the right-hand end of the base, as shown in Fig. 1 is attached the horn 8 which in the construction shown is secured to the base by means of screw bolts. The upper end of the horn is bifurcated as usual, the ends or 5 branches being provided with any suitable bearing blocks upon which the knives 10 of the lever 12 rest. The lever 12 is of the second order the scale pan 13 being mounted upon the knife edges 14L thereof by means of a downwardly-turned spider 15 and the check port 16 for holding the platform in its correct level position is perforated and tapped at its lower end for the reception of a check rod 17 which is connected at its lower end by means of a link 18 with a stationary check post 19, the said post and rod being adjustable vertically and provided with nuts 21-21 respectively to lock them in adjusted position. At its outer end the lever 12 is suspended from a beam 22 by means of a loop 23 which is bifurcated and hooked at its upper end to engage knives 241- on said beam. Within its lower end the loop supports a concave bearing which receives a conical pivot 25 extending clownward from the under face of the end of lever 12 and thereby supports the latter. The beam 22 is fulcrumed upon a casting 26 the form of which is apparent in Fig. 1 and which is secured to the base by screw bolts 27. Said casting is slotted or open at 26 to permit the end of lever 12 to extend thereinto and to have free vertical movement and also to provide a passage for the link 23 by which the lever and beam are connected. By this construction the link connection is protected. Upon the side opposite the opening the casting is formed with a longitudinally extending arm or horn 28 which at its outer end is upwardly turned as at 29 and forms a stop member for limiting the movement of the beam. For this purpose it is recessed at 30 the upper and lower walls of the recess engaging the offset portion 31 of the beam and thereby limiting its motion. A pointer 32 is secured to the beam at the angle of the offset and co-acts with a mark 33 upon the stop member to indicate the median position of the beam. Beam 22 is supported by knife edges 3l34= upon seats 3535 upon upward extensions from the casting 26 and extends upon both sides of said bearings, the longer arm 22 being suitably notched and graduated for coaction with a large poise 36 and the shorter arm 22 being provided with graduations and notches for coacting with the small poise 37. The nose 38 of the beam is also provided with a knife 39 to which can be applied. a weight 40 when it is desired to still further increase the capacity of the scale. In order to lend stability to the beam a small pendulum 41 is attached thereto opposite its fulcrum the poise of the pendulum being preferably adjustable upon its rod 43 by means of a nut 44.

The ope 'ation of the scale will now be apparent. The article to be weighed is placed upon the scale pan 13, the poises in the meantime being placed at Zero. If the article is light, say less than a pound in weight, it may be weighed by shifting the small poise 37 until equilibrium is established and then noting the reading of the graduated beam. If, 011 the other hand, the article is heavy the poise 37 is left at the Zero position and the poise 36 shifted until equilibrium is almost attained when if it is desired to weigh more accurately the poise 37 may be shifted to determine fractional amounts. Preferably the arm 22 is graduated to pounds and the arm 22 to fractions of a pound, the spacing of the graduations of course depending, among other things, upon the weight of the poises 3687.

I claim:

1. In a weighing scale and in combination with the base and load-receiver thereon, a beam connected to the load-receiver and offset laterally to form a shoulder 31, and a stop-member having upper and lower abutments cooperating with said shoulder to limit the movement of the beam.

2. In a. weighing scale and in combination with the load-receiver thereof, a beam having an offset to form a shoulder, a support upon which the beam is fulcrumed, an arm extending from the support longitudinally beneath .the beam and formed at its end with shoulders adapted to embrace the beam and prevent excessive motion thereof in a vertical plane.

3. In a weighing scale and in combination with the load-receiver thereof, a beam having an offset to form a shoulder, a stopmember having shoulders above and below said offset portion to limit the vertical movement of the beam, and a pointer secured to the beam at the offset portion and embracing the stop-member between it and the beam.

4. In a weighing scale and in combination with the load-receiver thereof, a beam having an offset forming a shoulder therein, a stop-member mounted upon the beam support and extending within said offset portion, and a pointer secured to the beam adj acent said offset portion thereof.

5. In a weighing scale, a base, a lever fulcrumed thereon, a beam fulcrumed intermediate its ends, an adjustable connection between the lever and one arm of the beam, a poise adjustable upon this arm of the beam between the point of connection and the adjacent end of the beam, a second poise adjustable upon the arm of the beam on the opposite side of the fulcrum, the second mentioned arm having an offset portion adjacent to its end, and a stop member 06- acting with said offset portion to limit the vertical movement of the beam.

6. In a weighing scale, a base, a hollow support detachably secured to the base, bifurcated bearing arms extending upwardly from said support, a beam fulcrumed on said arms, stabilizing means depending from said beam into said support, a lever carrying a load-receiver and having one end extending within said support, and means connecting this end of the lever with said beam.

7. In a weighing scale, a base, a hollow support detachably secured to the base, bifurcated bearing arms extending upwardly from said support, a beam fulerumed on said arms, stabilizing means depending from said beam into said support, a lever carrying a load-receiver having one end extending within said support, means connecting this end of the lever with said beam, and means for adjusting the length of said connection, said adjusting means extending without the said hollow support.

. S. In a weighing scale, a base, a lever fulcrumed thereon, a beam fulcrumed on said base independently of the lever, and adjustable means connecting the lever and beam, comprising a loop suspended from said beam, a. conical pivot supporting one end of the lever, and an adjustable link connecting said pivot with said loop.

LEIVIS CALVIN IVETZEL.

l/Vitnesses:

H. L. BONEN, C. IV. FnssENnnN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.

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