25:
222:(1883). Porteous purchased patents held by Deidrick and jointly by partners Dusy and McCall as he perfected his machine. The basic design forms the basis of most modern earth moving scrapers, having the ability to not only scrape and move a quantity of soil, but also to discharge it at a controlled depth, thus quadrupling the volume which could be handled manually.
229:
Porteous formed the Fresno
Agricultural Works, which between 1884 and 1910 produced thousands of Fresno scrapers. The machines were used in agriculture and land leveling, as well as road and railroad grading and the general construction industry. They played a vital role in the construction of the
225:
The blade scooped up the soil, instead of merely pushing it along, and ran along a C-shaped bowl which could be adjusted in order to alter the angle of the bucket to the ground, so that the dirt could be deposited in low spots. This design was so revolutionary and economical that it has influenced
201:
Porteous invented an improvement on the simple buckboard, a horse-drawn earth scraper, and refined his Buck
Scraper, as he first called it, through several design improvements. His ideas, combined with those of fellow-inventors
198:
on irrigation and the requirement for a more efficient means of constructing canals and ditches in the sandy soil, and he went about the task of devising an earth moving scraper for that purpose.
245:
It was one of the most important agricultural and civil engineering machines ever made. In 1991 the Fresno scraper was designated as an
International Historic Engineering Landmark by the
351:
361:
346:
275:
246:
341:
270:
89:
61:
68:
108:
42:
75:
46:
298:
57:
356:
250:
176:
136:
35:
82:
336:
331:
8:
195:
184:
215:
125:
203:
188:
303:
219:
164:
129:
325:
211:
172:
231:
140:
239:
148:
207:
180:
168:
152:
194:
Having worked with farmers, Porteous recognised the dependence of the
299:"Confirm or deny: Highway 99 expert buckles up into my lie detector"
226:
the design of modern bulldozer blades and earth-movers to this day.
24:
156:
144:
235:
187:
and established a wagon shop, where he prospered, manufacturing
160:
49:. Unsourced material may be challenged and removed.
167:. After learning his basic skills, James Porteous
323:
147:. His father, William Porteous, had been a
175:in 1873, at the age of 25, and settled in
109:Learn how and when to remove this message
296:
276:American Society of Mechanical Engineers
247:American Society of Mechanical Engineers
352:Scottish emigrants to the United States
324:
263:
290:
249:. It was featured prominently in the
362:People from Haddington, East Lothian
297:Marshall, Gail (November 19, 2017).
47:adding citations to reliable sources
18:
13:
14:
373:
271:"Landmarks #158: Fresno Scraper"
23:
347:19th-century American inventors
34:needs additional citations for
342:People from Fresno, California
1:
256:
7:
135:James Porteous was born in
10:
378:
251:Fresno Metropolitan Museum
124:(1848–1922) was the
16:Scottish-American inventor
183:. In 1877, he moved to
155:who built and repaired
234:and later served the
43:improve this article
357:Scottish inventors
196:San Joaquin Valley
191:and heavy wagons.
216:Selma, California
126:Scottish-American
119:
118:
111:
93:
369:
316:
315:
313:
311:
294:
288:
287:
285:
283:
267:
204:William Deidrick
128:inventor of the
114:
107:
103:
100:
94:
92:
58:"James Porteous"
51:
27:
19:
377:
376:
372:
371:
370:
368:
367:
366:
322:
321:
320:
319:
309:
307:
295:
291:
281:
279:
269:
268:
264:
259:
115:
104:
98:
95:
52:
50:
40:
28:
17:
12:
11:
5:
375:
365:
364:
359:
354:
349:
344:
339:
334:
318:
317:
304:The Fresno Bee
289:
261:
260:
258:
255:
220:Fresno scraper
165:farm equipment
130:Fresno scraper
122:James Porteous
117:
116:
31:
29:
22:
15:
9:
6:
4:
3:
2:
374:
363:
360:
358:
355:
353:
350:
348:
345:
343:
340:
338:
335:
333:
330:
329:
327:
306:
305:
300:
293:
278:
277:
272:
266:
262:
254:
252:
248:
243:
241:
237:
233:
227:
223:
221:
217:
213:
212:Abijah McCall
209:
205:
199:
197:
192:
190:
186:
182:
178:
177:Santa Barbara
174:
173:United States
170:
166:
162:
158:
154:
150:
146:
142:
138:
133:
131:
127:
123:
113:
110:
102:
91:
88:
84:
81:
77:
74:
70:
67:
63:
60: –
59:
55:
54:Find sources:
48:
44:
38:
37:
32:This article
30:
26:
21:
20:
308:. Retrieved
302:
292:
280:. Retrieved
274:
265:
244:
232:Panama Canal
228:
224:
200:
193:
141:East Lothian
134:
121:
120:
105:
96:
86:
79:
72:
65:
53:
41:Please help
36:verification
33:
337:1922 deaths
332:1848 births
240:World War I
218:led to the
149:wheelwright
99:August 2009
326:Categories
257:References
208:Frank Dusy
181:California
153:blacksmith
137:Haddington
69:newspapers
310:March 13,
282:March 13,
214:, all of
169:emigrated
157:carriages
145:Scotland
236:US Army
189:buggies
171:to the
83:scholar
210:, and
185:Fresno
161:wagons
85:
78:
71:
64:
56:
90:JSTOR
76:books
312:2018
284:2018
163:and
151:and
62:news
238:in
45:by
328::
301:.
273:.
253:.
242:.
206:,
179:,
159:,
143:,
139:,
132:.
314:.
286:.
112:)
106:(
101:)
97:(
87:·
80:·
73:·
66:·
39:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
