US3717991A

US3717991A - Impact time indicator

Info

Publication number: US3717991A
Application number: US00154682A
Authority: US
Inventors: J Klar
Original assignee: Heald Machine Co
Current assignee: Heald Machine Co
Priority date: 1971-06-18
Filing date: 1971-06-18
Publication date: 1973-02-27
Anticipated expiration: 1990-02-27

Abstract

This invention relates to an impact time indicator and, more particularly, to apparatus for insertion in a container for shipping delicate devices to indicate the time when an accident takes place.

Description

United States Patent [191 Klar [4 1 Feb. 27, 1973 IMPACT TIME INDICATOR [56] References Cited [75] Inventor: John Klar, Boylston, Mass. UNITED STATES PATENTS [73] Assignee: The Heald Machine Company, Wor- 3,429,121 2/1969 Parker ..58/145 R cestor, Mass. 2,981,093 4/1961 Rhea ..58/39.5

[22] Filed: June 1971 Primary ExaminerRichard B. Wilkinson [21] Appl. No.: 154,682 Assistant ExaminerEdith C. Simmons Jackmon Attorney-Norman S. Blodgett [52] U.S. Cl. ..58/152 R, 58/395 B TR [51] Int. Cl. ..G04b 37/12, G041 9/04 [57] A S ACT 53 Fi of Search 5 33 395 45 R, 52; This invention relates to an impact time indicator and,

200/33 A, 33 D, 61.08, 61.45 R, 61.45 M

more particularly, to apparatus for insertion in a container for shipping delicate devices to indicate the time when an accident takes place.

8 Claims, 3 Drawing Figures INVENTOR.

JOHN KLAR BY v ATTORNEY PATENTEDFEBZTISYS BACKGROUND OF THE INVENTION One of the problems in the shipment of delicate tools and instruments is that they are often damaged in transit. This is particularly true in the case of machine tools such as internal grinding machines. Such machinery represents tremendously-high tolerances in relationship of parts for the accurate grinding of workpieces and is very expensive. When such damage occurs, it is usually not discovered until the shipping crate is opened at the installation point, which may be thousands of miles away from the original shipping point. It is important to know where the accident which caused the damage took place so that responsibility can be established. Trying to find out such information is, of course, quite difficult because the persons responsible for the accident are usually quite loathe to reveal that fact. Only the most intensive type of detective work can discover the true facts and, even then, the establishment of the time and place of the accident is sometimes possible. These and other difficulties experienced with the prior art devices have been obviated in a novel manner by the present invention.

It is, therefore, an outstanding object of the invention to provide an impact time indicator for indicating the time when an accident takes place which involves a shipping container.

With this and other objects in view, as will be apparent to those skilled in the art, the invention resides in the combination of parts set forth in the specification and covered by the claims appended hereto.

SUMMARY OF THE INVENTION In general, the invention relates to an impact time indicator for use with a container enclosing a delicate mechanism or the like. A housing is provided which is adapted to be fastened to the interior of the container. A clock is mounted in the housing and means is provided for terminating the clock operation when the container receives a shock in excess of a predetermined value.

BRIEF DESCRIPTION OF THE DRAWINGS The character of the invention, however, may be best understood by reference to one of its structural forms, as illustrated by the accompanying drawings, in which:

FIG. 1 is a perspective view showing in use an impact time indicator embodying the principles of the present invention,

FIG. 2 is a perspective view of the indicator, and

FIG. 3 is a perspective view of the inner mechanism of the indicator.

DESCRIPTION OF THE PREFERRED EMBODIMENT that it could be substantially damaged, if the container 11 with its contents were dropped, fell over, or were struck by a vehicle.

FIG. 2 shows the exterior of the indicator 10. It has a base plate 13 provided with apertured

ears

14 and 15 by which it can be screwed to the interior surface of the container. It will be understood that the indicator could be placed in any part of the container and even on the machine 12 itself. The indicator is provided with an exterior housing 16 consisting of the aforementioned base plate 13 and a hollow sheet metal cover 17. The cover 17 is attached to the base plate 13 on one side by a hinge 18 and at the other side by means of two latch ears 19 and 21 which are apertured and joined by a steel cable 22 whose ends are locked in a lead seal 23. The front face of the cover 17 is provided with a window 24 through which the time can be seen. A plate 25 is mounted on the front of the machine and may indicate the ownership of the indicator; it may also give certain legal notices relative to the consequences of tampering with the indicator.

FIG. 3 shows the mechanism mounted on the interior of the housing 16. Generally speaking, it consists of a clock 26 and a means 30, such as a shock-operated switch, for terminating the clock operation when the container receives a shock in excess of a predetermined value. The clock consists of a storage battery 27, a pulsing circuit 30a, an alternating current motor 28, and a clock mechanism 29, this latter consisting of a series of number-carrying discs 31 mounted on a common axis and driven by gears 32. The mechanism 29 is of the well-known type in which the rotation of a shaft 33 at a suitable speed will cause the discs 31 to rotate at different speeds to indicate by numerals in a straight line the elapsed time. One side of the motor 28 is connected by a wire 34 to one side of the circuit 30a, the other side of which is connected by a wire 35 to the means 30. The other side of the motor 28 is connected by a wire 36 to the means 30.,

The means 30 consists of a weight 37' mounted on one end of an arm 38, on the other end of which is mounted a smaller weight 39. To the weight 37 is connected the wire 35 leading to the battery 27 and from the weight also extends a fine, delicate wire 41. The arm 38 is pivoted about an axis A-A which, in the preferred embodiment, extends in the vertical direction or parallel to the broad flat surface of the base plate 13 of the housing. Another arm 42 is pivotally mounted for turning about the same axis A-A and carries a weight 43 at one end and a smaller weight 44 at the other end. The wire 36 leading to the motor 28 is connected to the weight 43 and the other end of the delicate wire 41 is also connected to that same weight. In other words, the wire 41 joins the two weights. This connection between the delicate wire 41 and the

wires

35 and 36 is an electrical connection as well as a mechanical connection and it allows current to flow around the circuit from the battery 27, through the circuit 30a, through the wire 35, the weight 37, the wire 41, the weight 43, and the wire 36, the motor 28, and through the wire 34 and the circuit 30a to the battery 27 again.

The operation of the invention will now be readily understood in view of the above description. The base plate 13 is screwed to the inner surface of the packing case 11 and, before the housing is locked, the clock is set for zero time. its operation is started by completing the circuit between the battery, the circuit 30a, the motor, etc. The circuit 300 generates electrical pulses at an exact rate and causes the motor to rotate, which motor operates through the gears 32 to rotate the shaft 33. The figures which appear at the window 24 show the elapsed time since the clock was set and, of course, the clock will be set by a person whose certificate of starting time may be suitably authenticated, as by signing before a notary public this setting would take place when the mechanism is placed in the crate. This would be before the crate is shipped with the mechanism 12 in its indicator. The packing crate 11 is closed with the indicator on the inside and shipment takes place. If, during the shipment of the packing crate and machinery, a shock is received, this will result in the

weights

37 and 43 moving about their vertical pivot A-A and, because of the fact that they are mounted in different planes, this will result in the breaking of the delicate wire 41 which join the two weights. This interrupts the circuit between the battery and the motor 28 and stops the clock. When the shipment reaches its final destination and it is discovered that the machine 12 has been damaged in transit, it is only necessary to look at the indicator 10 to determine the time at which the accident took place. It is then a simple matter to determine who was responsible for the custody of the shipping crate at that v time and liability is clearly established.

It is obvious that minor changes may be made in the form and construction of the invention without departing from the material spirit thereof. It is not, however, desired to confine the invention to the exact form herein shown and described, but it is desired to include all such as properlycome within the scope claimed.

The invention having been thus described, what is claimed as new and desired to secure by Letters Patent is:

1. An impact time indicator for use with a container enclosing a delicate device or the like, comprising a. a housing adapted to be fastened in the interior of the. container,

b. a clock mounted in the housing capable of registering long periods of time, consisting of a stack of numbered discs mounted on a common axis and by a pulsing circuit,

the container receives a shock in excess of a predetermined value, wherein said means is a shock-operated switch consisting of two pivoted weights located in different planes and joined by a delicate wire which disconnects the circuit from the motor when the shock is received.

2. An indicator as recited in claim 1, wherein each weight is mounted on one end of an arm with a smaller weight on the other end, the pivotal axis being located at an intermediate point on the arm.

3. An impact time indicator for use with a container enclosing a delicate device or the like, comprising a. a housing adapted to be fastened in the interior of the container,

b. a clock including a motor is mounted in the housin ca able of re isterin lon eriods of time and c. m ean for termi nating he cfi ck operation when the container receives a shock in excess of a predetermined value, said means consisting of a shock-operated fuse which disconnects a circuit from the motor when the shock is received.

4. An indicator as recited in claim 3, wherein the housing encloses the clock and the said means and cannot be opened by unauthorized persons without it being evident.

5. Anindicator as recited in claim 3, wherein the clock consists of a stack of numbered discs mounted on a common axis, the motor is an alternating current motor, and the motor is energized by a pulsing circuit.

6. An indicator as recited in claim 3, wherein the switch consists of a weight pivoted for movement about an axis separated from itself and including a delicate wire connected in the circuit-motor connections.

7. An indicator as recited in claim 6, wherein the switch consists of two pivoted weights located in different planes and joined by the said delicate wire.

8. An indicator as recited in claim 7, wherein each weight is mounted on one end of an arm with a smaller weight on the other end, the pivotal axis being located at an intermediate point on the arm.

. means for terminating the clock operation when"

Claims

1. An impact time indicator for use with a container enclosing a delicate device or the like, comprising a. a housing adapted to be fastened in the interior of the container, b. a clock mounted in the housing capable of registering long periods of time, consisting of a stack of numbered discs mounted on a common axis and driven by an alternating current motor energized by a pulsing circuit, c. means for terminating the clock operation when the container receives a shock in excess of a predetermined value, wherein said means is a shock-operated switch consisting of two pivoted weights located in different planes and joined by a delicate wire which disconnects the circuit from the motor when the shock is received.

3. An impact time indicator for use with a container enclosing a delicate device or the like, comprising a. a housing adapted to be fastened in the interior of the container, b. a clock including a motor is mounted in the housing capable of registering long periods of time, and c. means for terminating the clock operation when the container receives a shock in excess of a predetermined value, said means consisting of a shock-operated fuse which disconnects a circuit from the motor when the shock is received.

5. An indicator as recited in claim 3, wherein the clock consists of a stack of numbered discs mounted on a common axis, the motor is an alternating current motor, and the motor is energized by a pulsing circuit.